(dentistry) a dental appliance consisting of any of various substances (as metal or plastic) inserted into a prepared cavity in a tooth; "when he yawned I could see the gold fillings in his teeth"; "an informal British term for `filling' is `stopping'"
a food mixture used to fill pastry or sandwiches etc.
flow into something (as a container)
any material that fills a space or container; "there was not enough fill for the trench"
a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty