sock 2 
(sŏk)
(sŏk)v. socked, sock·ing, socks
v.tr.
To hit or strike forcefully; punch.
v.intr.
To deliver a blow.
n.
Idiom: A hard blow or punch.
sock it to (someone) Slang
To deliver a forceful comment, reprimand, or physical blow to someone else.
[Origin unknown.]