1.To smear with gum; to close with gum; to unite or stiffen by gum or a gumlike substance; to make sticky with a gumlike substance. "He frets like a gummed velvet."
2.To chew with the gums, rather than with the teeth.
gum up (a)To block or clog (a conduit) with or as if with gum; as, to gum up the drainpipe.
(b)to interfere with; to spoil. (Slang)
