What is the meaning of Triller?

A small passerine bird of the genus Lalage belonging to the cuckooshrike 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