- [uncountable, countable]
a hot dish of cooked meat and potatoes that are cut into small pieces and mixed together （回锅）肉丁土豆 corned beef hash 咸牛肉烧马铃薯
- [uncountable] (informal)
hashish (= a drug made from the resin of the hemp plant, which gives a feeling of being relaxed when it is smoked or put in the mouth and chewed. Use of the drug is illegal in many countries.) 哈希什，大麻麻醉剂（吸食或咀嚼时有放松感。很多国家的法律禁止服用该毒品） - (also hash sign)(both British English)(North American English pound sign)(also hashtag British and North American English)[countable]
the symbol ( # ), especially one on a phone or computer keyboard （尤指电话上的）# 号 Press the hash key. 按下哈希键。
Word Originnoun sense 1 and make a hash of something. late 16th cent. (as a verb): from French hacher, from hache ‘axe’, from medieval Latin hapia, of Germanic origin. noun sense 3 1980s: probably from hatch ‘shade an area with parallel lines’, altered by folk etymology.