A fucking scary device used to circumcise a penis. Kinda looks like Satan's toenail clippers, or maybe some German masochist's stapler. Basically a vise specially shaped to fit a penis. Can exert up to 20,000 pounds of crushing force. Google it if you're curious -- and brave.
His penis had the ring of confidence - the brown scar - so typical of being gomcoed.
He loved that his parents had gomcoed him when he was born.
His gomcoed circumcision was a delight to behold (and hold)!
No smegma on him, he was gomcoed.