From WordNet (r) 3.0 (2006):
gum
n 1: a preparation (usually made of sweetened chicle) for
chewing [syn: chewing gum, gum]
2: the tissue (covered by mucous membrane) of the jaws that
surrounds the bases of the teeth [syn: gingiva, gum]
3: any of various substances (soluble in water) that exude from
certain plants; they are gelatinous when moist but harden on
drying
4: cement consisting of a sticky substance that is used as an
adhesive [syn: glue, gum, mucilage]
5: wood or lumber from any of various gum trees especially the
sweet gum [syn: gumwood, gum]
6: any of various trees of the genera Eucalyptus or Liquidambar
or Nyssa that are sources of gum [syn: gum tree, gum]
v 1: cover, fill, fix or smear with or as if with gum; "if you
gum the tape it is stronger"
2: grind with the gums; chew without teeth and with great
difficulty; "the old man had no teeth left and mumbled his
food" [syn: mumble, gum]
3: become sticky
4: exude or form gum; "these trees gum in the Spring"