airboat

[air-boht]
noun
  1. Also called swamp boat. a small open boat having a very shallow draft and driven by a caged airplane propeller mounted above the rear transom, capable of traveling at relatively high speeds through shallow water, swamps, etc.
verb (used without object)
  1. to go or travel in an airboat.

Origin of airboat

1865–70, for an earlier sense; air(craft) + boat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for swamp boat

swamp boat

noun
  1. a shallow-draught boat powered by an æroplane engine mounted on a raised structure for use in swampsAlso called: airboat

airboat

noun
  1. another name for swamp boat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012