concuss

Everyday

To hurt someone's brain by a hard knock to the head, so that they may feel dizzy, sick, confused or even pass out for a short time. tree →

In the lessons

In PE, sport and safety lessons, pupils learn that a head bump can concuss you and that you must stop playing and tell an adult. Rugby, football and cycling have rules about concussion. Phrases: "be concussed", "concussion protocol".

Examples

• He was concussed when he fell off his bike. tree →
• A hard tackle can concuss a player. tree →
• If you might be concussed, stop playing straight away. tree →
• Wearing a helmet makes it less likely you'll be concussed. tree →
• The doctor checked whether she was concussed. tree →

Note

Most often used in the passive: "be concussed". Noun: concussion. Safety: after a head knock, signs like headache, sickness, sleepiness or confusion mean get medical help; never "play on".