A marine bivalve mollusc, Atrina fragilis

Aircraft in which a propeller or fan can be used in a horizontal position for vertical takeoff or landing (VTOL) and then rotated for forward movement.

(sports, idiomatic, often derogatory) A fair weather fan that has shown no past loyalty to a team.

Synonym of convection oven

plural of fan oven

plural of fan tracery

(architecture) Tracery rising from a capital or a corbel, and diverging like the folds of a fan over the surface of a vault.

plural of fan-blast

(ironworking) The blast produced by a fan, as distinguished from that produced by a blowing-engine.

(entomology) Having a fan-like arrangement of the nervures or veins of the wings.