boat whistle

/boʊt ˌwɪsəl/
/boʊt ˌhwɪsəl/
IPA guide

Other forms: boat whistles

Definitions of boat whistle
  1. noun
    a whistle on a boat that is sounded as a warning
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    type of:
    whistle
    acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound
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