Here are some other words that could describe a rumbling noise in the throat, depending on the context:
* Rumble - a low, continuous sound, like thunder.
* Gurgling - a bubbling sound made by liquid moving through a narrow space.
* Snoring - a noisy breathing sound made during sleep.
* Grunting - a short, guttural sound made by an animal or person.
The best word depends on the specific sound you want to describe.