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

Derived forms: open days

• train fare
• train of thought
• train oil
• train set
• train station
• train ticket
• train wreck
• trainable
• trainband
• trainbandsman
• trainbearer
• trained
• trained nurse
• trained worker
• trainee
• traineeship
• trainer
• training
• training college
• training program
• training school
• training ship
• training table
• trainload
• trainman