(Sebastian:) I just noticed that this definition is completely different from the definition of approach. This is really an unfortunate distinction, because an approach that is not an approach move is still a move. We distinguish the part of the term that both have in common! Is there really no better way to distinguish the two?
Bill (Later comment): At the present time, the approach page does include a reference to approach moves. Approach is a general term covering kakari, tsume, yose, and approach moves. It is not unusual for a word to have both general and specific senses.