什么样的人被称为“a catch”?

1) An Item -I did not expect Ray and Nadia to be an item, because I did not think Ray liked dating foreign girls -Are Tina and Albert an item, because I cannot tell -Jeff and Alexandra are no longer an item Definition: A romantically involved couple Etymology: derived from the fact an item is a single object instead of two 2) On the Market -After Troy got dumped by his girlfriend he was back on the market -Sophie wondered whether Mike was back on the market, because he had not been seen with his girlfriend -Gabby was on the market again after ending her long distance relationship Definition: available 3) A catch -Many thought Frank could get a prettier wife since he himself was a catch -Gavin's girlfriend is quite a catch -The girl with a great personality and good looks is definitely a catch definition: An eligible man or woman