(electrical installation) A way of mounting a fixture, e.g. a socket so that the body of the fixture is inside the wall, leaving only a cover plate on top of the surface of the wall.

(LGBT, rare) Having or pertaining to a gender identity or sexual orientation which fluctuates in intensity or between multiple options.

(computing, mechanics) The study of computational algorithms to solve mathematical problems in the field of fluid dynamics.

To play fast rhythms using a wind instrument by fluttering one's tongue.

Third-person singular simple present indicative form of flutter tongue

present participle of flutter tongue

simple past tense and past participle of flutter tongue

(automotive) A liquid used to reduce controlled emissions from the exhaust of diesel engines

A thixotropic liquid applied to screw threads that keeps them from loosening.

(drama) Used other than figuratively or idiomatically: To stumble over or otherwise misspeak one's lines. / (figuratively) To make a mistake.