英语词源字典 - 在线词源网站

anker (n.)[anker 词源字典]: also anchor, liquid measure in North Sea and Baltic trade, early 14c., from Dutch, related to German Anker, Swedish ankare, Medieval Latin anceria "keg, vat," which is of unknown origin. That of Rotterdam, once used in England, equaled 10 old wine or 8.5 imperial gallons.[anker etymology, anker origin, 英语词源]
terror (n.): early 15c., "something that intimidates, an object of fear," from Old French terreur (14c.), from Latin terrorem (nominative terror) "great fear, dread, alarm, panic; object of fear, cause of alarm; terrible news," from terrere "fill with fear, frighten," from PIE root *tres- "to tremble" (see terrible).

From c. 1500 as "fear so great as to overwhelm the mind." Meaning "quality of causing dread" is attested from 1520s. Sense of "a person fancied as a source of terror" (often with deliberate exaggeration, as of a naughty child) is recorded from 1883. Terror bombing first recorded 1941, with reference to German air attack on Rotterdam. Terror-stricken is from 1831. The Reign of Terror in French history (March 1793-July 1794) was the period when the nation was ruled by a faction whose leaders made policy of killing by execution anyone deemed an impediment to their measures; so called in English from 1801. Old English words for "terror" included broga and egesa.