Definition from Wiktionary, the free dictionary
blockhole (plural blockholes)
- (cricket) A small depression in the pitch caused by batsmen tapping their bats on the point where they have taken block. The description of the "blockhole" being a physical location has caused much debate within the cricketing community. Many assert that the "blockhole" is actually the general area in which the batsman takes guard. A ball bowled into the "blockhole" will generally force the batsman to play a "blocking" type shot.