1. (noun) an enveloping structure or covering enclosing an animal or plant organ or part

• case

2. (noun) a dress suitable for formal occasions

• cocktail dress

1. (noun) a protective covering (as for a knife or sword)

• aglet
• aiglet
• cot
• fingerstall
• holster
• scabbard

2. (noun) an enveloping structure or covering enclosing an animal or plant organ or part

• husk
• lorica
• medullary sheath
• myelin sheath
• neurilemma
• neurolemma
• theca

1. (noun) a protective covering (as for a knife or sword)

• protection
• protective cover
• protective covering

2. (noun) an enveloping structure or covering enclosing an animal or plant organ or part

• cover
• covering
• natural covering

3. (noun) a dress suitable for formal occasions

• dress
• frock

1. (noun) an enveloping structure or covering enclosing an animal or plant organ or part

• case
• encase
• incase