way of measuring land of unsure amount mentioned in Domesday also old publications; by some known as an "acre," by others "half an acre," and also by other individuals a "furlong." Spelman; Cowell; Blount. A French way of measuring land, containing one hundred square perches, of eighteen foot each, or about an acre. However the quantity varied in numerous provinces. Spelman. In Louisiana, the terms "arpent" and "acre" are occasionally utilized interchangeably; but there is however a substantial difference, the arpent becoming the square of 192 feet while the acre of 209 and a fraction. Randolph v. Sentilles, 110 La. 419, 34 South. 587.