/ tʃɜːp; NAmE tʃɜːrp/ (also chir·rup / ˈtʃɪrəp/) verb
1.
[ v ] ( of small birds and some insects ) to make short high sounds
2.
[ v , v speech ] to speak in a lively and cheerful way
► chirp (also chir·rup ) noun
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WORD ORIGIN
late Middle English : imitative.