A boat with two parallel hulls or floats, especially a light sailboat with a mast mounted on a transverse frame joining the hulls.
A raft of logs or floats lashed together and propelled by paddles or sails.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.