YARD Copy link • YARDA court, area: chors (for cattle; Vid: COURT). A measure of three feet, duo cubitus (a cubitus being a foot and a half: ☞ the Roman gradus is less than a yard, about 2½ feet; ulna is much more than a yard). A yard long, tripedalis (of three Roman feet). The support of a sail, antenna (Caes.), or antennae, plur., (Ov., Hirt.): ☞ cornua = the extremities of the yard.