An Arctic seabird, Fulmarus glacialis.

(number theory) A function, denoted by ρ, used to estimate the proportion of smooth numbers up to a given bound.

(Australia, offensive) An anti-immigrant and anti-refugee slogan with racist overtones.

(vulgar) An ungrateful and dismissive remark.

Alternative spelling of fuckstruck

A surname from German.

Alternative spelling of Führer

(vulgar) Expression of shock or dismay.

plural of full-frontal

Having reached complete biological maturity / fully-fledged