1. One who, or that which, aids

Derived forms: aiders

• trailing edge
• trailing four o'clock
• trailing windmills
• train
• train depot
• train dispatcher
• 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