manger

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

• noun A trough or an open box in which feed for livestock is placed.

from The Century Dictionary.

• noun A trough or box in which is laid for horses or cattle such food as oats, bran, roots, or the like (hay being generally placed in a rack above the manger); the receptacle from which horses or cattle eat in a stable or cowhouse.
• noun Nautical, a small space at the forward end of the deck, divided off by a combing (called the manger-board), just back of the hawse-holes, to prevent the entrance of water through the latter when the after part of the deck is flooded.

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

• noun A trough or open box in which fodder is placed for horses or cattle to eat.
• noun (Naut.) The fore part of the deck, having a bulkhead athwart ships high enough to prevent water which enters the hawse holes from running over it.

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

• noun A trough for animals to eat from.

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

• noun a container (usually in a barn or stable) from which cattle or horses feed