What is the meaning of Get_in?

Used other than figuratively or idiomatically: see get, in.

To get into or inside something, literally or figuratively.

To enter a place; to gain access.

To secure membership at a selective school.

To be elected to some office.

To become dark earlier as a result of seasonal change; to draw in.

To arrive.

An exclamation of joy at one's success.

Source: wiktionary.org