noun

• (slang) A cheating trick; a fraud.
  "BENEDICK. [Aside] I should think this a gull, but that the white-bearded fellow speaks it: knavery cannot, sure, hide itself in such reverence."
• (obsolete, Oxford University slang) A swindler or trickster.
  "You'll excuse me, sir, but as you are fresh, take care to avoid the gulls; they fly about here in large flocks, I assure you, and do no little mischief at times." "I never understood that gulls were birds of prey," said I.—"Only in Oxford, sir; and here, I assure you, they bite like hawks, and pick many a poor young gentleman as bare before his three years are expired, as the crows would a dead sheep upon a common. […]""

verb

• (US, slang) To mislead.
• (US, slang) To trick and defraud.
• (dialectal) To flatter, wheedle.

noun

• (dialectal) A breach or hole made by the force of a torrent; fissure, chasm.
• (dialectal) A channel made by a stream; a natural watercourse; running water.

verb

• (dialectal) To sweep away by the force of running water; to carve or wear into a gully.