pointer

One that directs, indicates, or points, especially.

A long tapered stick or a laser beacon used to call attention to objects, as on a chart or blackboard.

A scale indicator on a watch, balance, or other measuring instrument.

A dog of a breed developed in Europe to point game, having a smooth, short-haired coat that is often white with black or brownish markings.

A dog of any of various similar breeds.

A piece of advice; a suggestion.

A piece of indicative information.

A variable that holds the address of a core storage location.