Ăr'go-naut, n.

noun

n. [Lat. Argonauta, Gr. ’Αργοναύτης, from ’Αργώ and ναύτης, Lat. nauta, for navita, a seaman, sailor, from ναῦς, Lat. navis, ship. See ARGO.]

  1. One of the persons who sailed to Colchis with Jason, in the Argo, in quest of the golden fleece.
  2. (Zoöl.) The nautilus. See ARGONAUTA.