rood      a crucifix; a unit of length, from 5.5 to 8 rods; a unit of area, 40 square rods; a unit of 1 square rod or so.
ternion a group of three, esp. of three sheets folded in two for binding.
tierce a third of a pipe, or 42 wine gallons; a vessel holding this quantity; (eccles.) the third of the seven canonical hours; (fencing) the third of eight defensive positions; (piquet) a run of three cards of the same suit.
tod an English unit of weight, typically 28 pounds, used primarily for wool; a load; a bushy mass, especially of ivy.
pica a sixth of an inch; a craving for unnatural food, such as dirt.
heer an old unit of measure for yarn, about 600 yards.
ligne (Swiss watchmaking) a unit, 0.0888 inch, used chiefly to measure the thickness of movements, and divisible into 12 douziemes; a unit, 0.025 inch, for measuring the thickness of buttons.
dol a standardized unit of pain.
koku a Japanese dry measure, 5.12 bushels.
grex a measurement of fiber weight: grams per 10 km.
oxgang an old English land measure, an eighth of a carucate. (also, "bovate")
carucate a measure ranging from 60 to 160 acres.
parasang a Persian measure of distance, about 3.5 miles.
momme a Japanese unit of weight, 3.75 grams.
stere a cubic meter.