What is the tagalog definition of tambourine?

Answer 1

The definition is probably the same as in any language:

a percussion instrument resembling a shallow drum with metal discs around the edge, played by being shaken or hit with the hand.

but maybe you want to know the Tagalog word for tambourine

Answer 2

The Tagalog definition of "tambourine" is "pandereta." It is a musical instrument consisting of a circular frame with jingles or small cymbals attached, often played by shaking or striking the instrument.