Top definition
When your sibling and child decide to have a kid. Also, a combination of grandchild and niece/nephew. Most common among rednecks.
Billy: "Heeey, my brother Larry and my daughter Sally Mae are gittin' hitched!"
Jack: "Weeell, I s'pose we'll have ourselves a lil' kentucky baby runnin' 'round here right soon!"
by katkat July 07, 2006
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
2
1. noun - a baby that has two relations, ie both your grandkid and your neice.
1. Yea, Mary's son married her brother and had a kid, its a kentucky baby cuz its both her neice and her grandkid.
by MackaFatty July 07, 2006
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug