CleopatrayoudaoicibaDictYouDict[Cleopatra 词源字典]
common name of sister-queens in Egypt under the Ptolemaic Dynasty. The name is Greek, probably meaning "key to the fatherland," from kleis "key" (see clavicle) + patris, genitive of pater "father" (see father (n.)). The famous queen was the seventh of that name.[Cleopatra etymology, Cleopatra origin, 英语词源]
latchkeyyoudaoicibaDictYouDict
also latch-key, 1825, a key to draw back the latch of a door, from latch (n.) + key (n.1). Latchkey child first recorded 1944, American English, in reference to children who come home from school while both parents are at work.
Rosetta Stone (n.)youdaoicibaDictYouDict
discovered 1798 at Rosetta, Egypt; now in British Museum. Dating to 2c. B.C.E., its trilingual inscription helped Jean-François Champollion decipher Egyptian demotic and hieroglyphics in 1822, which opened the way to study of all early Egyptian records. Hence, figurative use of the term to mean "something which provides the key to previously unattainable understanding" (1902). The place name is the European form of Rashid, a name given because it was founded c.800 C.E. by Caliph Harun ar-Rashid.
tulip (n.)youdaoicibaDictYouDict
1570s, via Dutch or German tulpe, French tulipe "a tulip" (16c.), all ultimately from Turkish tülbent "turban," also "gauze, muslin," from Persian dulband "turban;" so called from the fancied resemblance of the flower to a turban.

Introduced from Turkey to Europe, where the earliest known instance of a tulip flowering in cultivation is 1559 in the garden of Johann Heinrich Herwart in Augsburg; popularized in Holland after 1587 by Clusius. The tulip-mania raged in Holland in the 1630s. The full form of the Turkish word is represented in Italian tulipano, Spanish tulipan, but the -an tended to drop in Germanic languages, where it was mistaken for a suffix. Tulip tree (1705), a North American magnolia, so called from its tulip-shaped flowers.
piciformyoudaoicibaDictYouDict
"Of or relating to the order Piciformes, which includes the woodpeckers and (in later use) the toucans, barbets, puffbirds, jacamars, and honeyguides", Late 19th cent.; earliest use found in Elliott Coues (1842–1889), naturalist and historian. From scientific Latin Picus, genus name ( Linnaeus Systema Naturae (ed. 10, 1758) I. 112, after earlier use by him in Systema Naturae; from classical Latin pīcus woodpecker: see below) + -iform, after scientific Latin Piciformes, suborder name ( E. Coues Key to North American Birds (ed. 2, 1884) iii. ii. 446; earlier as a superfamily name, A. H. Garrod 1874 in Proc. Zool. Soc. 123).