bubble
n.β Β«βHave you ever tried “crystalβ?” he asked, bringing out crystal methamphetamine and a small glass pipe that some refer to as a “bubble.”Β» ββStates Grapple With Growing Teen Meth Use” by Martha Irvine in Lake Elmo, Minn. Newsday (Long Island, N.Y.) Apr.10, 2005. (source: Double-Tongued Dictionary)