What is the meaning of welt?

noun

• A raised mark on the skin (as produced by the blow of a whip); characteristic of many allergic reactions.
  • synonyms: wale, weal, wheal
• A raised or strengthened seam.

verb

• Beat severely with a whip or rod.
  • usage: "The teacher often flogged the students"; "The children were severely trounced"
  • synonyms: flog, whip, lather, lash, slash, strap, trounce
• Put a welt on.
  • usage: "welt the shoes"