ribless

/ˈrɪbləs/
adjective
  1. Having no ribs; lacking the curved bones that form the chest cage.
    • The ribless design of the umbrella made it lightweight but less sturdy.
    • The ribless skeleton of the snake was surprisingly flexible.
    • Some ribless animals, like certain fish, have a very different body structure.
  2. Describing a garment or fabric that has no raised vertical lines or ridges (ribbing).
    • The ribless sweater had a flat, sleek appearance.
    • He bought a ribless knit hat that didn't have the usual textured pattern.
    • She preferred ribless socks because they felt smoother against her skin.
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What does "ribless" mean? | whatsthatwordmean | whatsthatwordmean