Wildcard

A wildcard character can be used to substitute for any other character or characters in a string. Common wildcards include "*" (zero or more characters) and "?" (a single character).

A variable used in searches and comparisons (usually signified by an asterisk "*") to denote that any value may be returned. Note: For example, a search of a database for the character string "fire*" could return "firewall," "fire station," "firebug," etc.