Jacob'sladder

Ja·cob's ladder (jāʹkəbz) n.

1. Nautical. A rope or chain ladder with rigid rungs.

2. Any of various plants of the genus Polemonium, especially P. caeruleum, having blue flowers and alternate, pinnately compound leaves with numerous leaflets.

  [From the ladder seen by the biblical patriarch Jacob in a dream (Genesis 28:12).]

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