A hash pipe
. A pipe
that enables the user to inhale lots of smoke in a short amount of time, usually used for Marijuana
A chillum is typically a straight cylinder about 10-15 centimeters (4-6 inches) long. The hole is a centimeter or two (half an inch) across, and the while thing is slightly narrower at the mouth end.
Chillums are made from a variety of materials, but hard wood or unglazed ceramic are the most common. Sometimes they are carved with decorative patterns.