1. Made of horn (or of a substance resembling horn)
   - corneous, horny

See also: hard

• closed curve
• closed fracture
• closed gentian
• closed in
• closed interval
• closed loop
• closed primary
• closed session
• closed shop
• closed universe
• closed-angle glaucoma
• closed-captioned
• closed-circuit television
• closed-class word
• closed-door
• closed-end fund
• closed-end investment company
• closed-heart surgery
• closed-loop system
• closed-minded
• closed-ring
• closedown
• closefisted
• closelipped
• closely