IPA: /ˈɡrʌntlɪŋ/
KK: /ˈɡrʌntlɪŋ/
A young pig.
The farmer raised a few gruntlings in the barn.
Gruntling is formed from "grunt" (from Middle English "gruntien", meaning to make a low, guttural sound) and the diminutive suffix "-ling" (meaning small or young). The word "gruntling" refers to a small or young creature that makes a grunt-like sound, often used to describe young pigs.
Think of a small creature that makes a low sound, like a young pig, which helps you remember that a gruntling is a little one that grunts.