Sounds like there is a connection between "guttering" and "guttural".

Main Entry: gut·tur·al
Pronunciation: 'g&-t&-r&l, 'g&-tr&l
Function: adjective
Etymology: Middle French, probably from Medieval Latin gutturalis, from Latin guttur throat
1 : articulated in the throat <guttural sounds>
2 : VELAR
3 : being or marked by utterance that is strange, unpleasant, or disagreeable
- guttural noun