'gunk' definitions:

Definition of 'gunk'

From: WordNet
noun
Any thick, viscous matter [syn: sludge, slime, goo, goop, gook, guck, gunk, muck, ooze]

Definition of 'gunk'

From: GCIDE
  • gunk \gunk\ n. any thick gooey and messy substance. [informal]
  • Syn: goo, gook, guck, muck, ooze, sludge, slime. [WordNet 1.5]