Webster's Revised Unabridged Dictionary · 1913

Thew

Thew (thū) , noun

[Old English thew, þeau, manner, habit, strength, Anglo-Saxon þeáw manner, habit (compare þȳwan to drive); akin to Old Saxon thau custom, habit, Old High German dou. r56.]

[Chiefly used in the plural Thews (thūz).]

1.
Manner; custom; habit; form of behavior; qualities of mind; disposition; specifically, good qualities; virtues. [Obsolete]
For her great light Of sapience, and for her thews clear. — Chaucer
Evil speeches destroy good thews. — Wyclif (1 Cor. xv. 33)
To be upbrought in gentle thews and martial might. — Spenser
2.
Muscle or strength; nerve; brawn; sinew. — Shakespeare
And I myself, who sat apart And watched them, waxed in every limb; I felt the thews of Anakim, The pules of a Titan's heart. — Tennyson