Simple Definition of cootie
: a type of small insect that lives in people's hair
Full Definition of cootie
Origin of cootie
perhaps modification of Malay kutu
First Known Use: 1917
Learn More about cootie
Medical Dictionary: Definition of "cootie"
Seen and Heard
What made you want to look up cootie? Please tell us where you read or heard it (including the quote, if possible).