Synonyms for Cork:

n.

horse chestnut, cone, latex, kernel, acorn, chicle, gum, nutshell, cola nut. close off, fill, jam something open/shut, close up, lock out, block off, full, shut, bolt, fasten, bar. lid, mouth, lip, compartment, flip top, overflow, cap. closure (noun)
closure, obstruction, choke, lock, fastener, seal.
cork (noun)
bob, bobber, phellem, cork up, bobfloat.
plug (noun)
valve, spigot, stopper, stop, bung, cover, spile, tap, plug.
stopper (noun)
spike.
type of plug (noun)
stopper, phellem, spike, seal, bobber, close, plug, stop, oak.
wood (noun)
cyprus, maple, walnut, sycamore, birch, juniper, redwood, oak, yew, fir, dogwood, acacia, eucalyptus, poplar, sumac, cherry, ash, alder, teak, linden, elm, magnolia, hazel, chestnut, beech, mahogany, balsa, tupelo, sandalwood, pine, cedar, hickory, ebony, wood, knotty pine, spruce, ironwood, cottonwood.

v.

contact (verb)
cork up.
plug (verb)
close.

Other synonyms:

cone, horse chestnut, cola nut, latex, chicle, flip top, acorn, nutshell, gum, kernel. compartment, lid. fill, lip. mouth, overflow. cap. gag
cork up.
Other relevant words:
bar, chicle, bolt, fill, fasten, bobfloat, spike, mouth, shut, cone, cork up, latex, cap, compartment, lid, kernel, overflow, nutshell, lip, bob, bobber, gum, full, bung, acorn, phellem.

Usage examples for cork

  1. Cork Hill was not a pleasant place at night. – A History of the Four Georges, Volume I (of 4) by Justin McCarthy
  2. " Well, it's this way," began Doc Linyard, crossing his good leg over the cork one: " My wife got a letter from England last week, saying as how an uncle had died, leaving his property to her and her brother, Tom Clover. – Richard Dare's Venture by Edward Stratemeyer
  3. Luke, wrapping the cork of the champagne bottle under his long fingers, hesitated. – Laramie Holds the Range by Frank H. Spearman