hat
/hæt/noun
1- a shaped covering for the head worn for warmth, as a fashion item, or as part of a uniform帽子。
1.1
- used to refer to a particular role or occupation of someone who has more than one（有多种职务或职业者的）职务, 头衔：
wearing her scientific hat she is director of a pharmacology research group.
她在科学方面的职务是药理学研究组的主任。
短语
be all hat and no cattle
- US informal tend to talk boastfully without acting on one's words〈美, 非正式〉空谈, 夸夸其谈。
black hat（或white hat）
- used in reference to the bad (or good) party in a situation (from the colour of hat traditionally worn by the bad (or good) character in Western films)［用于指西部片场景中可通过帽子颜色判断出来的坏人或好人］黑帽（或白帽）：
we are the good guys - the black hats lost.
我们是好人——黑帽子坏人输了。
hats off to -
- used to express admiration for someone who has achieved something or done something praiseworthy向…致敬：
hats off to them for agreeing to work for the day to raise money.
向同意在筹款日参加工作的人们致敬。
keep something under one's hat
- keep something a secret将…保密。
pass the hat round （或〈北美〉pass the hat）
- collect contributions of money from a number of people for a specific purpose募集捐款。
pick something out of a hat
- select something, especially the winner of a contest, at random随机挑出（尤指比赛中的获胜者）。
take one's hat off to
- used to state one's admiration for (someone who has achieved something)向 （取得成就之人）…致敬（或表示钦佩）。
throw one's hat in
- or into the ring express willingness to take up a challenge欣然迎战, 接受挑战。
派生词
hatful
noun （pl. -fuls）hatless
adjectivehatted
adjective词源
Old English hætt, of Germanic origin; related to Old Norse h Ǫttr 'hood', see also to HOOD1 .