(US) In Alaska, a light, high-altitude snowfall that indicates the end of summer.

(transitive) To remove dust from. / (transitive, figuratively) To use something after a long time without it. / (transitive, slang) To jilt or desert (a person).

A large duck (Cairina moschata) which is native to Mexico, Central and South America.

A form of jet engine that possesses an inlet duct, such as a turbojet, ramjet, or turbofan. Rockets are not considered duct engines.

plural of sitting duck

(formal, idiomatic) A phrase used before disagreeing with someone or saying something they may find offensive, usually considered polite.

Of, pertaining to, or characteristic of a grand duke or duchess, his or her family, a grand dukedom, or grand duchy.

The wife or widow of a grand duke. / (proscribed) The wife of a grand prince.

The territory owned, ruled, or reigned over by a grand duke or grand duchess; contrast grand dukedom.

(category theory) For a given category C, its dual category Cᵒᵖ is obtained by reversing the direction of each one of the arrows of C.