Well, of course I went to our guru, Harold McGee to try to settle this.
He says, in his section entitled
Clarified Butter "...butter whose water and milk solids have been removed..." (page 36)
Unfortunately, I find no entry in his index for "drawn butter." So I guess we're never gonna know for sure.
My own experience inclines me to think "drawn butter" is just melted, for dipping your lobster/crab meat into. Actually, a little garlic and lemon juice doesn't hurt here, either.
Mike