the NATO standard assault rifle

Alternative form of FN-FAL

(programming) A metasyntactic variable, similar to foo and bar.

(Discordianism) A word (which may or may not be "fnord" itself) commonly held to be invisible to the conscious mind, but subliminally causing a sense of unease or sudden anger when encountered. So used in the Illuminatus! trilogy.

(US, military, slang) Initialism of fucking new guy.

(Australia) Initialism of Far North Queensland.

(law) Initialism of forum non conveniens.

(travel, aviation) Initialism of first name unknown. (used on birth certificates or airline reservations)

plural of fnord

(slang, onomatopoeia) Representing a crude laugh, especially in response to sexual innuendo.