=Side-Bone.=—A lateral cartilage of foot at quarter, turned to bone (ossified). =Side Wheeler.=—A pacer. =Siffon.=—Jewish horse-dealers’ word (spelling in doubt) meaning to run in bids on a greenhorn to boost price of horse. =Slab-Sided.=—Flat-ribbed. =Smokes His Pipe.=—Lip torn where bridle bit rests. =Smoky Eye.=—“A little smoky.” Eye cloudy, whitish, pearly in color, or opaque. =Smooth Mouth.=—Cups or marks worn off incisor teeth, indicating great age. =Spavin.=—Bony enlargement or exostosis upon lower, inner, front aspect of hock joint. =Speck in Eye.=—A small scar of spot, not on pupil, and as a rule, not impairing vision. =Speedy Cutting.=—Striking the inside of the hind cannon against the front foot as the hind is brought forward and passes the front foot on the outside in over-reaching when the horse is speeding. =Splay-Footed.=—“Nigger-heeled.” =Splint.=—A bony growth on course of splint-bone on either side of cannon-bone below the knee. =Split Hoof.=—Quarter-crack. Sand-crack. =Stag; Staggy.=—Thick and coarse in throat-latch and crest from late castration. =Stocked Legs.=—“Filled” or dropsical, swollen legs below knees and hocks, the result of a lack of exercise or of sickness. =Stringy; Stringhalt.=—The hind leg is jerked up at each step in walking and trotting. See Cramp. =Stifled.=—Patella of stifle out of place. Any disease of the stifle-joint. =Stump Sucker.=—See Cribber. =Sweeny.=—Wasting, (atrophy) of the muscles of the shoulder. =Switcher.=—Tail switching, nervous mare, that may also throw urine. =Talks to the Driver.=—A roarer. =Takes a Little Hold.=—A cribber. =Ten Minutes Short of Work.=—Balky. =Tied in at Knees.=—Light bone and tendons, making the part markedly constricted under knee. =Thoroughpin.=—A fluctuating, bursal distension which can be pushed from side to side under the large tendon just above the hock-joint. =To Bush on Gristle.=—To get a rebate on purchase price from a seller when a side-bone has been found after sale. =Too Much Daylight Under Him.=—A leggy horse. =Tongue Loller.=—Tongue hangs from mouth. May be paralyzed. =Trephined.=—A molar tooth removed by punching downward into mouth by means of an instrument inserted upon tooth root through an orifice cut (trephined) in bone of jaw. =Trot Cut Short.=—Short stride of fore legs. =Wall-Eye.=—See Glass-eye. =Washy Coupled.=—Long and loose in coupling and cut up flank. A poor keeper that tends to scour when warm or tired. =Weaver.=—A horse that sways and swings backward and forward in stall. The action is akin to that of a caged bear, and the habit is learned by imitation or in idleness. It may indicate a high-strung, nervous temperament and the tendency to it may possibly be transmitted by an affected sire or dam. It seems to arise from the restlessness and longing to escape from “prison life,” or, in short, suggests the “call of the wild.” =Weed.=—Has heaves. =Wiggler.=—See Bobber.