Jacob's ladder
1. pinnate-leaved European perennial having bright blue or white flowers • Syn: Greek valerian, charity, Polemonium caeruleum, Polemonium van-bruntiae, Polymonium caeruleum van-bruntiae • Hypernyms: polemonium 2. (nautical) a hanging ladder of ropes or chains supporting wooden or metal rungs or steps • Syn: jack ladder, pilot ladder • Topics: seafaring, navigation, sailing • Hypernyms: ladder
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