1. Tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya
   - hart's-tongue, hart's-tongue fern, Olfersia cervina, Polybotria cervina

Type of: fern

• armory
• armour
• armour plate
• armour plating
• armour-bearer
• armour-clad
• armour-plated
• armoured
• armoured car
• armoured catfish
• armoured combat vehicle
• armoured personnel carrier
• armoured scale
• armoured sea robin
• armoured vehicle
• armourer
• armoury
• armpit
• armrest
• arms
• arms control
• arms deal
• arms industry
• arms manufacturer
• arms race