Mommoth Posted in M Best definition Mommoth 1)The name for a woman who was one hot,then had kids and let her self go. 2)An obese mother -Wow Tyler’s mom used to be hot back in college, now she’s fat – Yup she’s a Mommoth How satisfied are you with the definition? Looking for Mommoth meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 9 times.