B1 the part around the neck of a piece of clothing, usually sewn on and sometimes made of different material衣领，领口
B2 a strap made of leather or other strong material that is put around the neck of an animal, especially a dog or cat（尤指套在狗、猫等动物脖子上的）颈圈，项圈
a type of necklace (= a piece of jewellery worn around the neck)项链，项饰
specialized biology an area around the neck of an animal that is coloured differently from the other parts of the body（动物颈部颜色不同的）色圈，颈锁形条纹
specialized engineering a strip of strong material that is put around a pipe or a piece of machinery to make it stronger or to join two parts together（管子或机器上的）箍，卡圈，套管
When it came to explaining the lipstick on his collar, he found that drink had clouded his memory.
"Is that real fur on your collar?" "Certainly not - I only wear fake fur."
This jacket has a removable collar.
I'm very fond of this shirt but it's starting to wear at the collar.
to catch and hold someone so that they cannot escape抓住，逮住，逮捕
to find someone and stop them from going somewhere, often so that you can talk to that person about something拦住（以便与之谈话）