boat whistle

[n] - a whistle on a boat that is sounded as a warning
Found on http://www.webdictionary.co.uk/definition.php?query=boat%20whistle

boat whistle

noun a whistle on a boat that is sounded as a warning
Found on http://wordnetweb.princeton.edu/perl/webwn?s=boat%20whistle
No exact match found