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guck

Definitions of guck
  1. noun
    any thick, viscous matter
    synonyms: goo, gook, goop, gunk, muck, ooze, slime, sludge
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    types:
    sapropel
    sludge (rich in organic matter) that accumulates at the bottom of lakes or oceans
    type of:
    matter
    that which has mass and occupies space
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