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This word is used to describe a good hit (smack) or a decent, entertaining beating (of someone other than yourself).
Guy 1: Did you see that dude pummel that one guy?

Guy 2: Yea, he gave him the smackwell.
by Pervis Jervis March 02, 2009
Being especially skilled at rubbing one out.
When you can toss off effiiently and on queue, you done smackwell.
by bonzaimagee April 07, 2006