English Dictionary

kick in

verb

(transitive) To kick or strike so as to cause the object struck to collapse or fall inwards. / (transitive, slang) To kick or strike (a person); to beat up

I felt the effects of the medication kick in within minutes.

意味（1）

(transitive) To kick or strike so as to cause the object struck to collapse or fall inwards.

Upon hearing residents in the burning house, the passerby kicked in the front door and yelled to those inside.

意味（2）

(transitive, slang) To kick or strike (a person); to beat up

意味（3）

(intransitive, idiomatic) To start, connect, or take effect, especially in a sudden way.

People expect women [when they give birth] to have this instinct that kicks in.

意味（4）

(transitive and intransitive, idiomatic) To contribute, especially to a collection of money.

For the year-end party, we're asking each employee to kick in twenty dollars.