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 72 times.