How do you pronounce catch?
Do you say Ketch catch?
What the Cambridge, Merriam-Webster, and Oxford dictionaries all say is that for some Americans, catch is pronounced with a short e, and so is a homophone for ketch. These same Americans pronounce batch normally.
What means catch?
catch verb (TAKE HOLD)
A1 [ I or T ] to take hold of something, especially something that is moving through the air: I managed to catch the glass before it hit the ground. We saw the eagle swoop from the sky to catch its prey. Our dog ran past me and out of the house before I could catch it.