Tumbler
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 23:19的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/tumbler ref] tumble + -er == etymonline == [https://www.etymonline.com/word/tumble…”的新页面）
wiktionary
tumble + -er
etymonline
tumbler (n.)
mid-14c., "acrobat," agent noun from tumble (v.). Compare Old English tumbere "tumbler, dancer." A fem. form was tumblester (early 15c.), tumbester (late 14c.) "female acrobatic dancer." Meaning "drinking glass" is recorded from 1660s, originally a glass with a rounded or pointed bottom which would cause it to "tumble;" thus it could not be set down until it was empty. As a part of a lock mechanism, from 1670s.
