String is an item that was added to the game in Indev.
String is primarily received by killing Spiders, which drop 0-2 units on death, but can also be obtained by destroying Cobwebs. String has a 4/5 (80%) chance of spawning in a Dungeon chest, where it will appear in stacks of 1 - 4 units. This is not a practical way to find String though, since Spiders can be used to get string more quickly and in larger amounts.
String has no special functions and can be only used for crafting items such as Bows.