D defs.my
Entry 1 sense Webster, 1913

Eosaurus

· E·o·sau·rus · IPA
01 n. An extinct marine reptile from the coal measures of Nova Scotia; -- so named because supposed to be of the earliest known reptiles.
  1. 1.
    An extinct marine reptile from the coal measures of Nova Scotia; -- so named because supposed to be of the earliest known reptiles.(Paleon.)