n.
Pronunciation: ' r ō -l ə r
Function: noun
Etymology: German, from rollen to roll, reverberate, from Middle French roller ― more at ROLL
Date: 1678
1 : any of various mostly brightly colored nonpasserine Old World birds (family Coraciidae) that perform rolling aerial dives during courtship displays
2 : a canary having a song in which the notes are soft and run together