What is the bottom of a snare drum called?

The bottom of a snare drum is called the snare drumhead or resonant head. This head is typically thinner than the top head and plays a crucial role in producing the drum's characteristic sound, as it allows the snare wires to vibrate and create the sharp, crisp sound associated with snare drums. The snare wires are attached to the bottom side and are activated when the drum is struck.