Vibrator (device designed to stimulate a woman's genitals).
Back-of-the-book; denoting those stamps in a catalogue that are not used for the payment of regular postage fees, and are displayed separately in the catalogue after that listing; the division between these two groups varies with the publisher.
An erection of the penis.
An extended magazine of a gun.
A computer floppy disk of the kind supplied in a stiff plastic outer shell.