jacob's ladder

Noun	1.	Jacob's ladder - pinnate-leaved European perennial having bright blue or white flowers Polemonium caeruleum, Polemonium van-bruntiae, Polymonium caeruleum van-bruntiae, Greek valerian, charity polemonium - any plant of the genus Polemonium; most are low-growing often foul-smelling plants of temperate to arctic regions
	2.	Jacob's ladder - (nautical) a hanging ladder of ropes or chains supporting wooden or metal rungs or steps jack ladder, pilot ladder sailing, seafaring, navigation - the work of a sailor ladder - steps consisting of two parallel members connected by rungs; for climbing up or down

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