'mack' definitions:

Definition of 'mack'

(from WordNet)
noun
A waterproof raincoat made of rubberized fabric [syn: macintosh, mackintosh, mac, mack]

Definition of 'mack'

From: GCIDE
  • mack \mack\ n. A mackintosh; -- a shortened form.
  • Syn: macintosh, mackintosh, mac. [WordNet 1.5]