Missile

Missiles in NetHack come in two forms. Those that are shot from a missile launcher, and those that are thrown.

The shot missiles are:
 * arrows, shot with bows
 * crossbow bolts, shot with a crossbow

The thrown missiles are:
 * darts
 * daggers

One could also count all stones as missiles. They can be both thrown and shot with a sling.

Strategy
In fact, anything can be used as a missile. Cockatrice eggs make popular missiles, and so do various potions.

Missiles are good for softening targets from afar. Anything can even be shot and thrown past boulders, which is often advantageous in Sokoban.