(informal, idiomatic) Despite the addressee's belief that the speaker was unaware of something, the speaker, in fact, was already aware.

(aviation) The forwardmost part of an aircraft, rocket or missile; it is shaped to minimize aerodynamic resistance.

plural of nose cap

plural of nose bleed

(now historical) A protective cap on the end of a gunstock. / (aeronautics) The protective covering on the end of an aircraft fuselage.

(Western Pennsylvania) The kind of person who is always poking into people's affairs. / (Western Pennsylvania) An inquisitive person.

(slang) Cocaine.

present participle of brown-nose

(offensive) A larger than average nose.

simple past tense and past participle of brown-nose