watch As a noun, from Middle English wacche, Etymology As a noun, from Middle English wacche,See below for verb form. Noun watch (plural watches) 1.A portable or wearable timepiece. [quotations ▼] More people today carry a watch on their wrists than in their pockets. 2.The act of guarding and observing someone or something. [quotations ▼] 3.A particular time period when guarding is kept. [quotations ▼]The second watch of the night began at midnight. 4.A person or group of people who guard. [quotations ▼]The watch stopped the travelers at the city gates. 5.The post or office of a watchman; also, the place where a watchman is posted, or where a guard is kept. [quotations ▼] 6.(nautical) A group of sailors and officers aboard a ship or shore station with a common period of duty: starboard watch, port watch. 7.(nautical) A period of time on duty, usually four hours in length; the officers and crew who tend the working of a vessel during the same watch. (FM 55–501). 8.The act of seeing, or viewing, for a period of time. [quotations ▼] Derived terms[edit] (Terms derived from the noun 「watch」) 手錶 (戴在手腕上的計時儀器) 手錶,或稱爲腕錶,是指戴在手腕上,用以計時/顯示時間的儀器,手錶在英語裏watch源自中世紀wacche這一詞彙。 手錶一般是利用皮革、橡膠、尼龍佈、不鏽鋼等材料,製成錶帶,將顯示時間的「表頭」束在手腕上。