triller

Noun

 * 1) A small passerine bird of the genus Lalage belonging to the cuckoo-shrike family, so called because of the loud trilling calls of the male birds.
 * 2) One who or that which trills.
 * 3) A musical ornament consisting of a rapid alternation between two adjacent notes.

Noun

 * 1) trill

Etymology
From.

Verb

 * 1) to trill