the mind > language > linguistics > study of speech sound > speech sound > speech sound by manner > [verb (transitive)] > trill (3)
transitive. To pronounce (a consonant, esp. an r) with a vibration of the tongue or vocal cords. Also occasionally with out.
To pronounce (a consonant, esp. r) with a vibration of the tongue (or other vocal organ) and the corresponding auditory effect; = roll, v.2 38a.