UK: In Britain milk can be delivered to the doorstep in glass bottles. These are sometimes called cow eggs.
The milkmans here, go get a cow egg so we can have a brew.
av Blue Cawdrey 20. november 2004
A delicacy in many regions of the central/northern United States. Removed from the cow surgically. Many say it tastes exquisite
I had so many tasty cow eggs last night.
av durandal343 26. april 2011