Definition of arcas:
(N) :
In Greek mythology, (Ancient Greek: Ἀρκάς) a hunter who became king of Arcadia.
(N) :
alt=First Arcas meteorological rocket, shown at Wallops prior to flight test, July 31, 1959.|thumb|First Arcas meteorological rocket, shown at Wallops prior to flight test, July 31, 1959.
(N) :
a Portuguese civil parish in the municipality of Macedo de Cavaleiros in the northeast corner of Portugal.
(N) :
a figure in Greek mythology.
(N) :
a crater on Jupiter's moon Callisto measuring across.
(N) :
a genus of gossamer-wings in the butterfly family Lycaenidae.