One doesn't require an expert to tell one what one already knows.

plural of needle valve

A type of roller bearing in which the load-bearing elements are longish, thin, cylindrical pins.

Every man needs a woman as a romantic partner to spend his life with.

(originally Internet slang, chiefly humorous) Used to designate an assertion or other statement as false, inaccurate, or requiring verification.

(historical) A firearm that has a needle-like firing pin.

Asks the interlocutor if they require assistance.

(medicine) a solid, boring catheter inserted into bone marrow to supply intravenous fluids osseously.

plural of intraosseous needle

Something good does not need to be advertised.