A name for the letter R (from its resemblance in sound to the snarl of a dog). Now rare.

= dog's letter, n.

Phonetics. The pronunciation of a consonant, esp. r, with vibration of the tongue or other part of the vocal organs; a consonant so pronounced.

The action of pronouncing a consonant, esp. an r, with a vibration of the tongue or vocal cords; an instance of this. Cf. roll, v.2 38a.

A trilled sound. (Cf. litera canina, Latin name for r.)