Definition of P-trap in English:

P-trap

noun

  • A trap consisting of a U-bend with the upper part of its outlet arm bent horizontally.

    • ‘You will need a pipe wrench to disconnect the chrome fittings between the garbage disposal or the sink and the P-trap.’
    • ‘Then connect the P-trap to the tail piece with another washer and slip nut.’
    • ‘As needed, cut the P-trap and rotate both the trap section of the P-trap and the disposer.’

Origin

Late 19th century: so named because of its shape.