caul (n.)youdaoicibaDictYouDict[caul 词源字典]
early 14c., "close-fitting cap worn by women," from French cale "cap," back-formation from calotte, from Italian callotta, from Latin calautica "type of female headdress with pendent lappets," a foreign word of unknown origin. Medical use, in reference to various membranes, dates to late 14c. Especially of the amnion enclosing the fetus before birth from 1540s. This, if the child is born draped in it, was supersititously supposed to protect against drowning (cauls were advertised for sale in British newspapers through World War I).[caul etymology, caul origin, 英语词源]
drown (v.)youdaoicibaDictYouDict
c. 1300, transitive and intransitive, perhaps from an unrecorded derivative word of Old English druncnian (Middle English druncnen) "be swallowed up by water" (originally of ships as well as living things), probably from the base of drincan "to drink."

Modern form is from northern England dialect, probably influenced by Old Norse drukna "be drowned." Related: Drowned; drowning.
earring (n.)youdaoicibaDictYouDict
also ear-ring, Old English earhring, from ear (n.1) + hring (see ring (n.)). Another Old English word was earspinl. Now including any sort of ornament in the ear; the pendant sort originally were ear-drops (1720). Worn by Romanized Britons and Anglo-Saxons alike; their use declined in the Middle Ages and was reintroduced in England 16c., but after 17c. were worn there almost exclusively by women.
The two groups which had formerly a near monopoly on male earrings were Gypsies and sailors. Both has the usual traditions about eyesight, but it was also said that sailors' earrings would save them from drowning, while others argued that should a sailor be drowned and washed up on some foreign shore, his gold earrings would pay for a proper Christian burial. ["Dictionary of English Folklore"]
humane (adj.)youdaoicibaDictYouDict
mid-15c., variant of human (compare german/germane, urban/urbane), used interchangeably with it until early 18c., by which time it had become a distinct word with sense of "having qualities befitting human beings." But inhuman still can be the opposite of humane. The Royal Humane Society (founded 1774) was originally to rescue drowning persons. Such societies had turned to animal care by late 19c.
kelpie (n.)youdaoicibaDictYouDict
1747, Scottish, of unknown origin, perhaps related to Gaelic colpach "heifer, steer, colt;" colpa "cow, horse." The Lowland name of a demon in the shape of a horse that was reputed to haunt lakes and rivers and to delight in causing drownings. But unlike its equivalents in Danish (nøkken) and Icelandic (nykur), it occasionally was benevolent, especially to millers by keeping their streams running.
life (n.)youdaoicibaDictYouDict
Old English life (dative lif) "existence, lifetime, way of life, condition of being a living thing, opposite of death," from Proto-Germanic *libam (cognates: Old Norse lif "life, body," Dutch lijf "body," Old High German lib "life," German Leib "body"), properly "continuance, perseverance," from PIE *leip- "to remain, persevere, continue; stick, adhere" (see leave (v.)). Much of the modern range of meanings was present in Old English. Meaning "property which distinguishes living from non-living matter" is from 1560s. Sense of "vitality, energy" is from 1580s. Extended 1703 to "term of duration (of inanimate objects)."

Life-jacket is from 1840; life-preserver from 1630s of anything that is meant to save a life, 1803 of devices worn to prevent drowning. Life-saver is from 1883, figurative use from 1909, as a brand of hard sugar candy, from 1912, so called for shape. Life-form is from 1861. Life cycle is from 1855.
straw (n.)youdaoicibaDictYouDict
Old English streaw (rare) "stems or stalks of certain species of grains," apparently literally "that which is scattered or strewn," related to streowian (see strew), from Proto-Germanic *strawam "that which is scattered" (cognates: Old Norse stra, Danish straa, Swedish strå, Old Saxon stro, Old Frisian stre, Old Dutch, Old High German stro, Dutch stroo, German Stroh "straw"), from PIE *stere- "to spread" (see structure (n.)). The notion perhaps is of dried grain stalks strewn on a floor as carpeting or bedding.

As a type of what is trifling or unimportant, attested from late 13c. Meaning "hollow tube through which a drink is sucked" is recorded from 1851. To draw straws as a means of deciding something is recorded from 1779 (the custom probably is older). As an adjective, "made of straw," mid-15c.; hence "false, sham." Straw poll is from 1932; earlier straw vote (1866). Straw hat first attested mid-15c. To clutch (or grasp or catch) at straws (1748) is what a drowning man proverbially would do. The last straw (1836 apart from the full phrase) is from the proverbial image: "it is the last straw that breaks the camel's back" (or, less often, the mare's, the horse's, or the elephant's), an image in use in English by 1755.
Let it not, however, be inferred that taxation cannot be pushed too far : it is, as the Oriental proverb says, the last straw that overloads the camel ; a small addition, if ill-timed, may overturn the whole. ["The Scots Magazine," April 1799]
wave (v.)youdaoicibaDictYouDict
"move back and forth," Old English wafian "to wave, fluctuate" (related to wæfre "wavering, restless, unstable"), from Proto-Germanic *wab- (cognates: Old Norse vafra "to hover about," Middle High German waben "to wave, undulate"), possibly from PIE root *webh- "to move to and fro; to weave" (see weave (v.)). Transitive sense is from mid-15c.; meaning "to make a sign by a wave of the hand" is from 1510s. Related: Waved; waving.
I was much further out than you thought
And not waving but drowning.
[Stevie Smith]
noyadeyoudaoicibaDictYouDict
"An execution carried out by drowning", Early 19th century (referring especially to a mass execution by drowning, carried out in France in 1794): from French, literally 'drowning', from the verb noyer, from Latin necare 'kill without use of a weapon', later 'drown'.