1. Of or belonging to the class Crustacea
   - crustacean 
2. Being or having or resembling a hard crust or shell

See also: crust, Crustacea

• traveler
• traveler's check
• traveler's joy
• perfect participle
• perfect pitch
• perfect tense
• perfecta
• perfected
• perfecter
• perfectibility
• perfectible
• perfection
• perfectionism
• perfectionist
• perfective
• perfective aspect
• perfective tense
• perfectly
• perfectness
• perfervid
• perfidious
• perfidiously
• perfidiousness
• perfidy
• perfluorocarbon