castor : Idioms & Phrases

Cas"tor and Pol"lux

Etymology

Castor and Pollux were twin sons of Jupiter and Leda.

Definitions

1. (Naut.) See Saint Elmo's fire, under Saint.

Webster 1913

• noun the toxic seed of the castor-oil plant; source of castor oil
  

WordNet

Cas"tor bean"

Definitions

1. (Bot.) The bean or seed of the castor-oil plant (Ricinus communis, or Palma Christi.)

Webster 1913

• noun large shrub of tropical Africa and Asia having large palmate leaves and spiny capsules containing seeds that are the source of castor oil and ricin; widely naturalized throughout the tropics
  castor bean plant; palma christi; palma christ; Ricinus communis.
  

WordNet

• noun a variety of beaver found in almost all areas of North America except Florida
  New World beaver.
  

WordNet

• noun a European variety of beaver
  Old World beaver.
  

WordNet

• noun a purgative extracted from the seed of the castor-oil plant; used in paint and varnish as well as medically
  

WordNet

Cas"tor oil

Definitions

1. A mild cathartic oil, expressed or extracted from the seeds of the Ricinus communis, or Palma Christi. When fresh the oil is inodorus and insipid.

Webster 1913

• noun very finely granulated sugar that was formerly sprinkled from a castor
  caster sugar.
  

WordNet

• noun large shrub of tropical Africa and Asia having large palmate leaves and spiny capsules containing seeds that are the source of castor oil and ricin; widely naturalized throughout the tropics
  castor bean plant; palma christi; palma christ; Ricinus communis.
  

WordNet

• (Zoöl.) a kind of beaver; called also parchment beaver.

Webster 1913

• noun type genus of the Castoridae: beavers
  Castor.
  

WordNet