(1)   A small reddish planet that is the 4th from the sun and is periodically visible to the naked eye; minerals rich in iron cover its surface and are responsible for its characteristic color
"Mars has two satellites"
(2)   (Roman mythology) Roman god of war and agriculture; father of Romulus and Remus; counterpart of Greek Ares

Etymology 1

From , from older Latin (older than 75 BC) . Mamers was his Oscan name. He was also known as Marmor, Marmar and Maris, the latter from the Etruscan deity Maris.

Proper noun

  1. The Roman god of war.
  2. The fourth planet in the solar system. Symbol:

Etymology 2

After Frank C. Mars, who founded the company that produces these chocolate bars.

Proper noun

  1. (®) The Mars Bar, a brand of chocolate bar with caramel and nougat filling.

  • 1985 — Michael Collier, Longest Day, p 206
    Easily eight foot tall, each was big, brown and glutinous - like giant Mars Bars squeezed and welded into nightmarish sculptures.