guard boat

1. 1.

   a boat that is on guard duty (as in a harbor) around a fleet of warships

   Broaderboat

Questions about guard boat

What does guard boat mean?

guard boat means "a boat that is on guard duty (as in a harbor) around a fleet of warships".

Is guard boat a common word?

guard boat is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.