'jampack' definitions:

Definition of 'jampack'

From: WordNet
verb
Crowd or pack to capacity; "the theater was jampacked" [syn: jam, jampack, ram, chock up, cram, wad]

Definition of 'jampack'

From: GCIDE
  • jampack \jampack\ v. t.
  • 1. to stuff; to fill completely and tightly; to jam[1].
  • Syn: jel, gel. [WordNet 1.5]