1. The most amazing man; one who reels in a women with ease and genuine acts of sensuality.
2. A God in bed; radiates sexuality.
3. A sexy beast of a man; excitingly appealing in every way.
4. A limited quantity; one of a kind
"I just met a Marco on Plenty of Fish, Yeah, it's like winning the lottery."
"That guy could never be a Marco, a Marco's one of a kind"
"Sorry for your lack of orgasm, too bad you don't have a Marco"
ADJ. "He Marco'd me as much as possible, but it wasn't enough because he's not at true Marco".