noun, verb · a passage or opening that allows access to a place

请在超市入口处领取购物篮。

verb · referring to the immediate sensation or feeling when something is first put into the mouth, particularly regarding food or drink.

这种酒虽然入口柔和，但后劲很大。

verb · to bring goods or materials into a country from abroad

海关正在查验这批入口货物的检疫证明。