'Cyclone cellar' definitions:

Definition of 'cyclone cellar'

(from WordNet)
noun
An underground shelter where you can go until a storm passes [syn: storm cellar, cyclone cellar, tornado cellar]

Definition of 'Cyclone cellar'

From: GCIDE
  • Cyclone cellar \Cyclone cellar\ or Cyclone pit \Cyclone pit\ . A cellar or excavation used for refuge from a cyclone, or tornado. [Middle U. S.] [Webster 1913 Suppl.]