restcard
nounUK /ˈrɛstkɑːd/
US /ˈrɛstkɑːrd/
A restcard is a small card that lets you take a break.
The teacher gave me a restcard so I could sit down for a minute.
OTHER MEANINGS
2. A card placed on a table to show that a seat is reserved for someone who is resting.
He put a restcard on the chair so no one would take it.
3. A small printed card with tips for relaxing.
The nurse handed out a restcard with breathing exercises.
4. A digital card in an app that reminds you to take a short rest.
My phone showed a restcard telling me to stretch.