WordNet sense 1 (cement consisting of a sticky substance that is used as an adhesive):

glue, mucilage

WordNet sense 2 (wood or lumber from any of various gum trees especially the sweet gum):

gumwood

WordNet sense 3 (any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum):

gum tree

WordNet sense 4 (a preparation (usually made of sweetened chicle) for chewing):

chewing gum

WordNet sense 5 (the tissue (covered by mucous membrane) of the jaws that surrounds the bases of the teeth):

gingiva

WordNet sense 6 (grind with the gums; chew without teeth and with great difficulty):

mumble