Jacob's ladder

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