tab key, tab -- (the key on a typewriter or a word processor that causes a tabulation)
tab -- (a short strip of material attached to or projecting from something in order to facilitate opening or identifying or handling it; "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")
pill, lozenge, tablet, tab -- (a dose of medicine in the form of a small pellet)