leash

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

• noun A chain, rope, or strap attached to the collar or harness of an animal, especially a dog, and used to lead it or hold it in check.
• noun A strap or cord attached to a harness worn by a small child, used to prevent the child from wandering off.
• noun A strap, cord, or other line used to keep an object close to its user or in a designated location.
• noun Control or restraint.
• noun A range of allowable behavior or responsibility.
• noun A set of three animals, such as hounds.
• noun A set of three.
• transitive verb To restrain with or as if with a leash.

from The Century Dictionary.

• To bind or secure by a leash.
• noun In physiology, an aggregation of similar cord-like structures, such as fibers, nerves, blood-vessels, etc.
• noun A band, lace, or thong; a snare.
• noun Especially— The line used to hold hounds or coursing-dogs until the time comes to set them on the game.
• noun A pack of hounds.
• noun A light line used to give the falcon a short flight without releasing her altogether. It is secured to the varvels on the bird's ankle.
• noun Among sportsmen, a brace and a half; three creatures of any kind, especially greyhounds, foxes, bucks, or hares; hence, three things in general.
• noun In weaving, one of the threads, cords, or wires extending between the parallel bars or shafts of the heddles and having a loop or eye in the middle for the reception of a warp-thread. See heddle.

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

• transitive verb To tie together, or hold, with a leash.
• noun A thong of leather, or a long cord, by which a person may hold or restrain an animal, such as a falconer holding his hawk, or a courser his dog. For dogs and cats, the leash is commonly attached to a collar around the neck of the animal.
• noun (Sporting) A brace and a half; a tierce; three; three creatures of any kind, especially greyhounds, foxes, bucks, and hares; hence, the number three in general.
• noun (Weaving) A string with a loop at the end for lifting warp threads, in a loom.
• noun to maintain close control over the activities of (a person).

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

• noun A strap, cord or rope with which to restrain an animal, often a dog.
• noun A brace and a half; a tierce.
• noun A set of three; three creatures of any kind, especially greyhounds, foxes, bucks, and hares; hence, the number three in general.
• noun A string with a loop at the end for lifting warp threads, in a loom.
• noun surfing A leg rope.
• verb To fasten or secure with a leash.
• verb figuratively to curb, restrain

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

• noun restraint consisting of a rope (or light chain) used to restrain an animal
• noun a figurative restraint
• verb fasten with a rope
• noun the cardinal number that is the sum of one and one and one