adj

• (slang, Scotland) Naked.

verb

• (intransitive) To race along swiftly (especially used of clouds).
  "When scudding on from snare to snare I plied My anxious visitation, hurrying on, Still hurrying hurrying onward ..."
• (ambitransitive, nautical) To run, or be driven, before a high wind with few or no sails set.
  "If the Main Topsail should by any accident be split, it will be still necessary to have a lofty Sail set in such a Sea, and the close reefed Topsail singly will be the best to scud under."
• (Northumbria) To hit or slap.
• (Northumbria) To speed.

noun

• (uncountable) A loose formation of small ragged cloud fragments (or fog) not attached to a larger higher cloud layer.
  "Small, ragged, low cloud fragments that are unattached to a larger cloud base and often seen with and behind cold fronts and thunderstorm gust fronts. Such clouds generally are associated with cool moist air, such as thunderstorm outflow."
• (Bristol) A scab on a wound.
• (slang, uncountable, Scotland) Pornography.
• (slang, uncountable, Scotland) The drink Irn-Bru.
  "a bottle of scud"