deck chair

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A folding chair that usually has arms and a leg rest.

from the GNU version of the Collaborative International Dictionary of English.

• noun a folding chair, usually having arms and a full-length leg rest; -- used for relaxing on the deck of a ship, at poolside, etc. Also called steamer chair

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A folding chair in which a wooden frame supports a length of canvas; traditionally used on the beach or onboard a liner.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a folding chair for use outdoors; a wooden frame supports a length of canvas