Horse Potpourri BABYTEETH=Also known as milk teeth the first the horse develops HAND=Equals four inches; the height of horses UNICORN=Mythological horselike animal, which had a single large horn in the middle of the forehead PLUG=A horse with poor conformation; sorry horse FROG=The triangular-shaped formation in the sole of the horse's foot OFFSIDE=RIght side of the horse TROJANHORSE=A classic legendary horse which Greek soldiers hid in to gain entry into Troy TRIGGER=Roy Rogers' famous black horse BLACKBEAUTY=Movie and book about a black stallion with a white star on his head NATIONALVELVET=A movie about a girl who rode her horse, Velvet, in the Grand Prix Steeplechase in England HORSEPLAY=Dangerous play among children and their peers HORSESENSE=Common knowledge of horses MRED=Famous talking horse SECREATARIAT=Famous Thoroughbred racehorse; won the Triple Crown and the Horse of the Year title in early 1970s DARKHORSE=A little known, unexpectedly successful entrant, as in a horserace