tab

(noun) the bill in a restaurant. Synonyms: check, chit. Examples: "He asked the waiter for the check."

(noun) sensationalist journalism. Synonyms: yellow journalism, tabloid.

(noun) the key on a typewriter or a word processor that causes a tabulation. Synonyms: tab key.

(noun) a short strip of material attached to or projecting from something in order to facilitate opening or identifying or handling it. Examples: "Pull the tab to open the can." "Files with a red tab will be stored separately." "The collar has a tab with a button hole." "The filing cards were organized by cards having indexed tabs."

(noun) a dose of medicine in the form of a small pellet. Synonyms: pill, lozenge, tablet.