trembler
nounUK /ˈtrem.blər/
US /ˈtrem.blɚ/
A trembler is a person or thing that shakes a little.
The little trembler held the cup with both hands.
OTHER MEANINGS
2. A device that makes a shaking or vibrating movement, such as a buzzer.
The old doorbell trembler rattled against the wall.
3. A person who is easily frightened or nervous.
Don't be such a trembler—the thunder can't hurt you.
4. A small bird or animal that shakes or vibrates its tail or wings.
The trembler wagged its tail as it hopped along the fence.