A Yard A unit of length equal to 3 feet in the US customary and British imperial systems of measurement, equal to precisely 0.9144 m since 1959 (US) or 1963 (UK). Units of similar composition or length in other systems. (nautical) Any spar carried aloft. (nautical) A long tapered timber hung on a mast to which is bent a sail, and may be further qualified as a square, lateen, or lug yard. The first is hung at right angles to the mast, the latter two hang obliquely. (obsolete) A branch, twig, or shoot. (obsolete) A staff, rod, or stick. (obsolete, medicine) A penis. (US, slang, uncommon) 100 dollars. (obsolete) The yardland, an obsolete English unit of land roughly understood as 30 acres. (obsolete) The rod, a surveying unit of (once) 15 or (now) 161⁄2 feet. (obsolete) The rood, area bound by a square rod, 1⁄4 acre. Synonyms (arm length): ell ($100): hundred (surveying measure): rod (large unit of area): virgate (small unit of area): rood