plural trills
1
: the sound of going quickly back and forth many times between two musical notes that are close to each other
2
: a quick high sound that is repeated
She pronounces her r's with a trill.
the trill of the bird
trills; trilled; trilling
1
: to say (something) with a trill
He trills [=rolls] his r's when he speaks.
2
: to make a series of quick high sounds
The phone trilled on her desk.
Cite this Entry
“Trill.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/trill. Accessed 21 Jun. 2026.
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