plimsoll

/ˈplɪmsəl/
noun
  1. A lightweight canvas shoe with a rubber sole, used for sports or casual wear.
    • He wore a pair of white plimsolls to the beach.
    • She bought new plimsolls for her summer vacation.
    • The children changed into their plimsolls for gym class.
  2. A line on the side of a ship showing the maximum depth to which it can be safely loaded; also called Plimsoll line or Plimsoll mark.
    • The cargo ship's plimsoll was clearly visible above the waterline.
    • International regulations require every merchant ship to display a plimsoll.
    • The captain checked the plimsoll to ensure the ship was not overloaded.
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