pointer
nounOne that directs, indicates, or points, especially.
nounA long tapered stick or a laser beacon used to call attention to objects, as on a chart or blackboard.
nounA scale indicator on a watch, balance, or other measuring instrument.
nounA 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.
nounA dog of any of various similar breeds.
nounA piece of advice; a suggestion.
nounA piece of indicative information.
nounA variable that holds the address of a core storage location.