Definitions

from the GNU version of the Collaborative International Dictionary of English

  • n. A large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America

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