noun: (comics, fiction) A blue pixie with white stocking cap, from the media franchise The Smurfs.
noun: (Internet slang) A smurf account.
noun: (computing, security) A smurf attack.
noun: (drugs, slang) One member of a team, each of whom acquires a small amount of money or ingredients for manufacturing drugs, keeping the transactions too small to raise suspicion.
verb: (slang) Used to replace any other verb, as is typical of smurfs.
verb: (banking) To structure a deposit; to split a large financial transaction into smaller ones so as to avoid scrutiny.
verb: (computing, transitive) To carry out a smurf attack against someone.