speedo

/ˈspidoʊ/
noun
  1. A brand of swimsuit, often used to refer to a tight-fitting swim brief worn by men and boys.
    • She packed her son's speedo for the beach vacation.
    • Many competitive swimmers prefer a speedo because it reduces drag in the water.
    • He wore a red speedo to the pool party.
  2. Informal short form of speedometer.
    • He checked his speedo and saw he was going over the limit.
    • The old car's speedo is stuck at zero.
    • My speedo stopped working, so I don't know how fast I'm driving.
Synonyms