Množina: Jacob's ladders
(Nautical) A hanging ladder of ropes or chains supporting wooden or metal rungs or steps; Also called: jack ladder, pilot ladder.
Množina: Jacob's ladders
Pinnate-leaved European perennial having bright blue or white flowers; Also called: Greek valerian, charity, Polemonium caeruleum, Polemonium van-bruntiae, Polymonium caeruleum van-bruntiae.