(1):

(n.) A short piece of rope having a knot at one or both ends, with a lanyard under the knot, - used to secure something.

(2):

(v. t.) To close or secure with a stopper.

(3):

(n.) A name to several trees of the genus Eugenia, found in Florida and the West Indies; as, the red stopper. See Eugenia.

(4):

(n.) One who stops, closes, shuts, or hinders; that which stops or obstructs; that which closes or fills a vent or hole in a vessel.