Ballet
来自Big Physics
mid 17th century: from French, from Italian balletto, diminutive of ballo ‘a dance’, from late Latin ballare ‘to dance’ (see ball2).
wiktionary
Borrowed from French ballet, from Italian balletto(“short dance, ballet”), diminutive form of ballo(“ball”), from Late Latin ballō(“to dance”).
etymonline
ballet (n.)
"theatrical, costumed dance and pantomime performance telling a story and representing characters and passions by gestures and groupings," 1660s, from French ballette from Italian balletto, diminutive of ballo "a dance," from Late Latin ballare "to dance," from Greek ballizein "to dance, jump about" (see ball (n.2)).