Abbreviation for "microchip module". Tracker module that is intended to sound like a sound chip, such as the ones found in the consoles and the microcomputers of the 80s. They typically have 3 or 4 channels, and most often try to emulate the sound of the Commodore 64 SID chip, but chip tunes that sound like the Game Boy or NES are not unheard of.

Actually, chipmods need not emulate any sound chip in particular, but it is essential that they sound chippy -- ie. use very few and simple samples.