The point that stands backward in an arrow, fishhook, etc., to prevent it from being easily extracted. Hence: Anything which stands out with a sharp point obliquely or crosswise to something else.

(informal, pharmacology) A barbiturate.

To furnish with barbs, or with that which will hold or hurt like barbs, as an arrow, fishhook, spear, etc. / (Nigeria) To cut (hair). / (obsolete) To shave or dress the beard of.

Armor for a horse.

To cover a horse in armor.

The Barbary horse, a superior breed introduced from Barbary into Spain by the Moors. / A blackish or dun variety of pigeon, originally brought from Barbary.

A diminutive of the female given name Barbara. / A surname.

(slang) A fan of the American singer Nicki Minaj, especially a female one.

(law) Abbreviation of Barbados.

(pharmacology) Used to form names of barbituric acid derivatives used as hypnotics.