Sentence:  His ability to find the <WSD>coffin corner</WSD> pinned countless opponents deep in their own zone, and even when he didn't have the big numbers that some other CFL punters did, he was always considered to be one of the very best directional punters in the league. 
Meaning of the word marked with <WSD> tags:  A corner of the field formed by the opponent's goal line and a sideline, into which a punt is often aimed in order to force the opposition to play close to their goal line.