英语词源字典 - 在线词源网站

Ballard [Ballard 词源字典]: surname, attested from late 12c., probably meaning "bald head;" see Wyclif's "Stye up, ballard," where Coverdale translates "Come vp here thou balde heade" [2 Kg.2:23-24, where God kills 42 children for making fun of Elijah's lack of hair.][Ballard etymology, Ballard origin, 英语词源]
boson (n.): class of subatomic particles, named for Indian physicist Satyendra Nath Bose (1894-1974) + subatomic particle suffix -on.
guaranty (n.): "act or fact of guaranteeing, a being answerable for the obligations of another," 1590s, garrantye, from earlier garant (see guarantee (n.)) with influence from Old French garantie "protection, defense; safeguard, warranty," originally past participle of garantir "to protect," from the same source. The sense of "pledge given as security" that developed 17c. in guarantee might reasonably have left the sense "act of guaranteeing" to this form of the word, but the forms remain confused.
light year (n.): also light-year, lightyear, "distance light travels in one year," 1888, from light (n.) + year.
Wenceslas: masc. proper name, from Medieval Latin Venceslaus (modern Czech Vaclav), from Old Czech Veceslavŭ, literally "having greater glory," from Slavic *vetye- "greater" + *-slavu "fame, glory," from PIE *klou-, from root *kle- "to hear" (see listen).