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A halyard is a rope used to raise or lower something up a mast or a — most often a sail on a boat, or a flag. You pull the halyard and the sail (or the flag) goes up; you ease it and the thing comes down. Sailors treat it as everyday kit, not a fancy word; people who only meet it on land usually meet it at a school or a ceremony. Though actually, it is not just ‘any rope on a boat’. Other ropes have other jobs and other names. A halyard’s job is the up-and-down one. It sounds a bit old and nautical, and you will meet it in sailing books more than in city talk.
升降索；升旗用的那條繩
組成From older English for a person or thing that hauls (pulls). It comes from ‘to haul’ plus an ending that once meant ‘-er’. Later, people heard the ending as yard (a spar on a ship), which is a misunderstanding of the shape of the word, not the real story.
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
halyardnoun/ˈhæljə(ɹ)d/
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nauticaltransportA rope used to raise or lower a sail, flag, spar or yard.
- At last I got my knife and cut the halyards. The peak dropped instantly, a great belly of loose canvas floated broad upon the water […]
- […]broad-shouldered men with hard red-beaked faces and huge hands coarsened by generations of straining on heavy oars and halyards,—men who feared only God and the sea-spirits of their strange mythology and were a law unto themselves, adventurers and bigots.
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firefightinggovernmentA rope used to extend a ladder.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。