screw-pile lighthouse noun1 •A formerly common type of lighthouse supported on a series of screw piles, typically a hexagonal building surmounted by a cupola for the light.[F]ar astern of the pilgrim ship a screw-pile lighthouse, planted by unbelievers on a treacherous shoal, seemed to wink at her its eye of flame, as if in derision of her errand of faith. — 1900 formsscrew-pile lighthouses
