Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Italian
Origin: trillo, from trillare 'to trill', probably from Dutch trillen 'to shake very quickly'

trill

2 noun
     
Related topics: Music, Birds
trill2 [countable]
1 technicalAPM a musical sound made by quickly moving between two notes
2HBB a short repeated high sound:
the trill of blackbirds
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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