verb · to hold something in the mouth or beak

燕子衔泥筑巢。

noun · the metal mouthpiece of a bridle used to control a horse

马口中含着马衔。

verb · to connect, join, or follow in sequence

这两段铁路紧密相衔。

noun · an official title, military rank, or professional designation

他被授予了大校军衔。

verb · to receive or carry out a command or mission

他衔命出使各国。

verb · to harbor or keep a feeling, such as resentment or gratitude, in one's mind

他对此衔恨在心。