In Japanese, "tsuru" can refer to a type of crane, which is likely related to the origami crane on the page.

Depending on the kanji, it might also be a few different verbs:

吊る: to hang; to suspend (something from something); to be hanged (by the neck)

釣る: to fish; to angle; to catch;

攣る: to cramp; to be cramped; to contract