Webster’s Revised Unabridged Dictionary · 1913
Cataphract
Cat′a·phract (kát′?·frăkt), n. [L. cataphractes, Gr. καταφράκτης, fr. κατάφρακτος covered, fr. καταφράσσειν to cover; κατά down, wholly + φράσσειν to inclose.] 1. (Mil. Antiq.) Defensive armor used for the whole body and often for the horse, also, esp. the linked mail or scale armor of some eastern nations.
2. A horseman covered with a cataphract.
Archers and slingers, cataphracts, and spears. Milton.
3. (Zoöl.) The armor or plate covering some fishes.