jacob's_ladder
1. [ noun ] (botany) pinnate-leaved European perennial having bright blue or white flowers
Synonyms: charity Polemonium_caeruleum Polemonium_van-bruntiae Polymonium_caeruleum_van-bruntiae Greek_valerian
Related terms: polemonium
2. [ noun ] (nautical) a hanging ladder of ropes or chains supporting wooden or metal rungs or steps
Synonyms: pilot_ladder jack_ladder
Related terms: ladder seafaring
Similar spelling:   Jacob's_rod
  Jacob's_staff