Webster's Revised Unabridged Dictionary · 1913

Lea

Lea , noun

[Compare Lay, n. (that which is laid), 4.]

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

Lea , noun

[Old English ley, lay, As. leáh, leá; akin to Prov. German lon bog, morass, grove, and perh. to Latin lucus grove, English light, n.]

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