What does "lea" mean?

Lea: (a) A measure of yarn; for linen, 300 yards; for cotton, 120 yards; a lay. (b) A set of warp threads carried by a loop of the heddle.

Additional senses

  1. 2.A meadow or sward land; a grassy field. "Plow-torn leas." Shak. The lowing herd wind slowly o'er the lea. Gray.

Sources