Meaning

1. to brood (to keep an egg warm until it hatches)
2. to hatch (to break open when a young animal emerges from it)
3. to hatch (to emerge from its egg)
4. to hatch (to ponder an idea slowly and deliberately)
5. (slang) to linger (to spend a long time not moving or doing anything)
6. (informal) to become foul due to heat