1. Fern of Europe and Asia Minor having short slender rhizome and densely tufted bright green fronds resembling parsley
   - mountain parsley fern, Cryptogramma crispa

Type of: rock brake

• opalise
• opalize
• opaque
• opaque gem
• opaquely
• opaqueness
• OPCW
• ope
• OPEC
• Opel
• open
• open access
• open account
• open chain
• open circuit
• open cluster
• open day
• open door
• open fire
• open fireplace
• open fracture
• open frame
• open house
• open interval
• open letter