A person who extracts sap from trees, especially rubber or maple trees. The tapper collected the sap from the maple trees to make syrup.
A device or tool used to draw liquid from a container, such as a keg or barrel. The bartender used a tapper to serve beer from the keg.
A person who taps telegraph keys or similar devices. The tapper sent a message using the telegraph machine.
A performer who practices tap dancing. The tappers dazzled the audience with their rapid footwork.