oklop

1. armour; armor plating
   Vitez je nosio težak gvozdeni oklop. — The knight wore heavy iron armour.
   Tenk ima debeo čelični oklop. — The tank has thick steel armour.
2. (of animals) shell; carapace
   Kornjača se sakrila u svoj oklop. — The tortoise hid in its shell.
3. (figurative) armour; protective shell
   Ispod tog oklopa krije se osetljiva osoba. — Beneath that armour there's a sensitive person.

A single suit of armour is oklop in the singular; the plural oklopi refers to several suits.