(Internet slang) Initialism of fuck you.

flux unit

A Chinese literary form developed during the times of the Han dynasty that combines prose and poetry, sometimes called rhymed prose.

(slang) Expertise, mastery

A surname from Chinese.

A county of Yan'an, Shaanxi, China.

Initialism of follow-up.

(philately) Initialism of fine used. (in stamp descriptions)

(vulgar) Abbreviation of fuck you.

(slang) Used to form nouns indicating expertise or mastery of specified skill or area of knowledge.