tripod

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

• noun A three-legged object, such as a cauldron, stool, or table.
• noun An adjustable three-legged stand, as for supporting a transit or camera.

from The Century Dictionary.

• noun In the sponge-spicules, a threerayed element having the arms of equal length and sloping from the point of union.
• Having three feet or legs.
• noun In classical antiquity, a seat, table, or other article resting on three feet.
• noun Hence, any object having three feet or legs, as a three-legged stool.
• noun A three-legged frame or stand, usually jointed at the top, for supporting a theodolite, compass, camera, or other instrument. See cuts under rock-drill and transit.
• noun In anatomy and zoology, a tripodal formation; a three-pronged or triradiate structure, as a bone. The premaxillary bone of birds is a tripod.

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

• noun Any utensil or vessel, as a stool, table, altar, caldron, etc., supported on three feet.
• noun A three-legged frame or stand, usually jointed at top, for supporting a theodolite, compass, telescope, camera, or other instrument.
• noun (Physiol.) the three organs, the heart, lungs, and brain; -- so called because their united action is necessary to the maintenance of life.

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

• noun a three-legged stand or mount
• noun slang A man that has a large penis disproportionate to his short stature, especially a of a dwarf
• verb intransitive To enter the tripod position showing signs of exhaustion or distress.

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

• noun a three-legged rack used for support