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Definition of Jacob's ladder
1. Noun. Pinnate-leaved European perennial having bright blue or white flowers.
Exact synonyms: Charity, Greek Valerian, Polemonium Caeruleum, Polemonium Van-bruntiae, Polymonium Caeruleum Van-bruntiae
Generic synonyms: Polemonium
Generic synonyms: Polemonium
2. Noun. (nautical) a hanging ladder of ropes or chains supporting wooden or metal rungs or steps.
Exact synonyms: Jack Ladder, Pilot Ladder
Category relationships: Navigation, Sailing, Seafaring
Generic synonyms: Ladder
Category relationships: Navigation, Sailing, Seafaring
Generic synonyms: Ladder