let one have it

let one have it  {v. phr.}
1a.  {slang}
To hit hard.
He drew back his fist and let the man have it.
Give him a kick in the pants; let him have it!
1b.  {slang}
To use a weapon on; to shoot or knife.
The guard pulled his gun and let the robber have it in the leg.
Compare: OPEN UP.
To attack with words; scold; criticize.
Mary kept talking in class until the teacher became angry and let her have it.
Syn.: LIGHT INTO (2).
2.  {informal}
To tell about it. — Used in the imperative phrase, "let's have it".
Now, Mary, let's have it from the beginning.
We will take turns reading; John, let's have it from page one.
Categories: {informal} {slang} {v. phr.}