Crossword clues for Organ knob 4 letters:STPSOrgan knobs: Abbr.STOPOrgan knobSTOPKnob on a pipe organREEDSTOPPipe organ knobSTOPSPipe organ knobsSTOPSOrgan knobsREEDSTOPOrgan control knobSTOPSKnobs on pipe organs.STOPSKnobs on a pipe organ