Top definition
Any sibling that looks different from the rest of the family. If you have blue eyes and the rest of your family has brown you may be a FedEx child.
Alex looks nothing like her sister, she must be a FedEx child.
by Chetex12 March 14, 2011
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