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Chocalho
A small chocalho
Percussion instrument
Classification hand percussion
Hornbostel–Sachs classification112.112
(Stick rattles)
Related instruments
Shaker
Musicians playing chocalho in a Samba school parade.

Chocalho is the generic name for "shaker" in Portuguese. There are various types of idiophones using this name in Portuguese, not always being the same instrument:

Chocalhos are typically used as a support to the sound of the caixas, to sustain the rhythm in the bateria. This instrument consists of an aluminum or wooden frame with a number of rows, each carrying pairs of jingles (platinelas[ what language is this?]). The chocalho is played by shaking it back and forth and pumping the arms up and down. Also known as Rocar.