armoured

from WordNet (r) 3.0 (2006)

armoured
    adj 1: used of animals; provided with protective covering [syn:
           {armored}, {armoured}] [ant: {unarmored}, {unarmoured}]
    2: protected by armor (used of persons or things military) [syn:
       {armored}, {armoured}] [ant: {unarmored}, {unarmoured}]

from The Collaborative International Dictionary of English v.0.48

armoured \armoured\ adj.
   1. provided with protective covering; -- used of animals.
      Opposite of {unarmored}.