Webster's Revised Unabridged Dictionary · 1913

Greave

Greave , noun

A grove. [Obsolete] — Spenser

Greave , noun

[Old French grees; compare Sp. grevas.]

Armor for the leg below the knee; -- usually in the plural.

Greave (grēvd) , transitive verb

[From Greaves.]

Naut. To clean (a ship's bottom); to grave.