A barbecue (apparatus for grilling).
"The girl in the park was playing with her favorite barbie among a pile of other toys."
A barbiturate.
A tall, slender female fashion doll.
In plain English: Barbie is a popular fashion doll with blonde hair and pink clothes that girls often play with.
"They decided to have a barbecue in Barbie's backyard on Saturday afternoon."
A diminutive of the female given name Barbara.
"The teacher smiled when she saw her favorite student, Barbie, raise her hand to answer the question."
The word barbie is a clipped version of barbecue combined with the diminutive suffix "-ie." It was originally used as an affectionate nickname for someone who enjoys grilling or eating barbecued food.