1. Covered with heavy steel
   - armor-clad [US], armour-clad [Brit, Cdn], armor-plated [US], armour-plated [Brit, Cdn]

See also: armored [US], armoured [Brit, Cdn]

• effeteness
• efficacious
• efficaciously
• efficaciousness
• efficacy
• efficiency
• efficiency apartment
• efficiency engineer
• efficiency expert
• efficient
• efficiently
• effigy
• effing
• effleurage
• effloresce
• efflorescence
• efflorescent
• effluence
• effluent
• effluvial
• effluvium
• efflux
• effluxion
• effort
• effortful