In English, when we say “emptiness,” it’s sometimes taken as a negative, or a vacuum — the state of a vegetable or something like that — which is not actually emptiness. According to Buddhist teachings, emptiness is the ground for everything. It’s the space, it’s the openness. Like for example, when the room is cluttered and messy, then there’s really nothing you can do in that room. There’s no possibility for things to manifest. So it’s like that. Emptiness is really the ground of every manifestation of any forms, any sounds, any feelings. So, it is more than nothingness.
From an interview on the release of Rebel Buddha
Buddhist Geeks Podcast (BG 195)