dirty

(redirected from Dirty (disambiguation))
Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

dirty

1. (of a colour) not clear and bright; impure
2. (of an aircraft) having projections into the airstream, such as lowered flaps

dirty

An aircraft configuration in flight with the undercarriage and/or flaps down. Airbrakes or spoilers may or may not be extended.