ゴロゴロ

What does ゴロゴロ mean in English?

1. thundering; purring; grumbling (e.g. stomach)(adv, adv-to, vs)
2. something large and heavy starting to roll(adv, adv-to, vs)
3. scattered about; common; commonplace; all over(adv, adv-to, vs)
4. idleness; idling about(adv, adv-to, vs)
5. having a foreign substance in (e.g. one's eye or stomach)(adv, adv-to, vs)
6. thunder(n)