What is the meaning of Triller?

A small passerine bird of the genus Lalage belonging to the cuckoo-shrike family Campephagidae, so called because of the loud trilling calls of the male birds.

One who or that which trills.

A musical ornament consisting of a rapid alternation between two adjacent notes.

trill

to trill

indefinite plural of trille

present of trille

Source: wiktionary.org