Definition of smurfs:
(n) :
(comics, fiction) A blue pixie with a white stocking cap, from the media franchise The Smurfs.
(n) :
(Internet slang) A smurf account or its user.
(v) :
(slang) Used to replace any other verb, as is typical of smurfs.
(n) :
(law enforcement, 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 in order to not raise suspicion.
(v) :
(law enforcement, banking) To split a large financial transaction into smaller ones so as to avoid scrutiny; to carry out structuring.
(n) :
(computer security) A smurf attack.