English edit

Etymology edit

twin +‎ -ie

Noun edit

twinnie (plural twinnies)

  1. A surfboard with two fins.
    • 2012, Paul Mason, Surfing, page 10:
      The twin-fin or “twinnie” is probably the most popular new surfboard of the last few years. Twinnies have short, wide tails and two big fins. They combine the fast turning of a shortboard with the wave catching of a longboard.

Anagrams edit