The part of the tambourine that you "bang on" is called a membrane.
Yes, a tambourine is a percussion instrument.
Timbrel
Tambourinette/ Timbrel
The palm is common but I think any part would be fine.
The tambourine has small round discs that make a jingling sound when it is shaken or when the "drum" part of it is rubbed or struck with the hand or tapped against the player's leg.
spinnerets
The part of the tambourine that vibrates is the head, which is typically made of a synthetic material or animal skin. When struck, this membrane produces sound by vibrating, while the jingles or cymbals attached to the frame also add to the overall sound by creating a jingling effect. The combination of these elements creates the tambourine's distinctive sound.
The tambourine has small round discs that make a jingling sound when it is shaken or when the "drum" part of it is rubbed or struck with the hand or tapped against the player's leg.
pellet bells
big bang: This is the big bang theory
She is playing her tambourine inside her room.
The tambourine is an unpitched percussion instrument.