You catch an object, or person/people, with your hands and/or arms

You catch an object, or person/people, with your hands and/or arms. But, then, you can catch a cold or flu without using your hands or arms. So, a definition that is somewhat ambiguous! In London, you catch a bus at a bus stop and catch a train at a train station. In American Football (see photograph, on the left) they seem to catch the ball a lot, but not in the various English football leagues... unless it is the goalie, saving the ball. A catch is generally seen as being lucky. 'He is a good catch,' a parent says to her recently-engaged daughter. The photograph on the right shows a young boy catching his hat. 'How lucky,' he must be saying to himself.  If the wind had been much stronger - like in a storm or hurricane - he probably would not have caught it.