lined-up keys
noun phraseUK /laɪnd ʌp kiːz/
US /laɪnd ʌp kiz/
Keys that are put in a neat row next to each other.
The teacher kept the lined-up keys on a hook by the door.
OTHER MEANINGS
2. Keys placed in a straight line for a game or activity.
We used the lined-up keys to play a matching game.
3. A set of keys organized so you can find the right one fast.
The janitor's lined-up keys made it easy to open every classroom.
4. Keys shown in a row on a chart or picture.
The picture showed lined-up keys for each door in the house.