1. A day when an institution (e.g. a school) admits the general public

Derived forms: open days

• ambitious
• ambitiously
• ambitiousness
• comatulid
• Comatulidae
• comb
• comb jelly
• comb-footed spider
• comb-like
• comb-out
• comb-plate
• combat
• combat area
• combat boot
• combat casualty
• combat ceiling
• combat fatigue
• combat injury
• combat intelligence
• combat mission
• combat neurosis
• combat pay
• combat pilot
• combat ship
• combat zone