s shape

/ɛs ʃeɪp/
noun
  1. A shape that looks like the letter S, with two curves going in opposite directions.
    • She drew an s-shape on the paper to show the path of the snake.
    • The river formed a beautiful s-shape as it wound through the valley.
    • The road ahead had a sharp s-shape, so drivers had to slow down.
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