Definition of quats:
(n) :
(chemistry) A quaternary ammonium cation or compound.
(adj) :
Quaternary.
(v) :
(Scotland, dialectal, transitive) To relinquish, forsake, give up.
(adj) :
(Scotland, dialectal, with "of") Free; no longer involved with; quit.
(v) :
(Wales and Southwest England, dialectal, intransitive) To squat or crouch down.
(n) :
(obsolete) An annoying, worthless person.