n. In porcelain-making, a small can arranged to hold slip, and to allow it to flow through a pipe at one end. Pipettes are sometimes fitted with adjustable pipes of different diameters. See slip-decoration.n. A small tube used to withdraw and transfer fluids or gases from one vessel to another.To take up or transfer by means of a pipette.n. A funnel-shaped attachment, with the small end downward, midway in a barometer, to act as a trap to prevent air-bubbles from rising to the top.