pointer (Noun) — A mark to indicate a direction or relation.
pointer (Noun) — An indicator as on a dial.
pointer (Noun) — (computing) indicator consisting of a movable spot of light (an icon) on a visual display; moving it allows the user to point to commands or screen positions. ex. "the folder will open under your pointer"
pointer (Noun) — A strong slender smooth-haired dog of Spanish origin having a white coat with brown or black patches; scents out and points to game.
pointer (Noun) — A small piece of useful advice or information.
pointer (Noun) — (computing) a variable that stores the memory location (address) of another variable.