society > occupation and work > equipment > receptacle or container > [adjective] > types of (3)
(a) n. a handle in the shape of a ring, spec. a ring attached to the seal of a can which breaks the seal when pulled; (b) adj. having a ring pull.
Of a package, etc.: that has a top which can be flipped open, usually by pulling the lid or tab upwards and back.
Of a vessel or device: containing fluid under pressure. Also, of a procedure: involving fluid under pressure.