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.

Synonym of drive out (To take up less space because the typesetter uses type that is thinner than the copy or the typesetter whites out more or squeezes in more lines on each page.)

To produce fewer copies than anticipated.

An exclamation of joy at one's success.

Source: wiktionary.org