Watcher
来自Big Physics
Safin(讨论 | 贡献)2022年4月27日 (三) 11:46的版本 (建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/watcher ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] wacchere,…”的新页面)
wiktionary
From Middle English wacchere, wachere, wacher, equivalent to watch + -er.
etymonline
watcher (n.)
late 14c. (early 13c. as a surname), agent noun from watch (v.).