noun

• (hunting) A whipper-in.
  "At half-past ten, Tom Moody, Sir Huddlestone Fuddlestone's huntsman, was seen trotting up the avenue, followed by the noble pack of hounds in a compact body—the rear being brought up by the two whips clad in stained scarlet frocks—light hard-featured lads on well-bred lean horses, possessing marvellous dexterity in casting the points of their long heavy whips at the thinnest part of any dog's skin who dares to straggle from the main body […]"
• (politics) A member of a political party who is in charge of enforcing the party's policies in votes.
  "I was going to vote against the bill, but the party whip came to see me and made it clear I needed to vote for it."
• (UK politics, with definite article) A document distributed weekly to MPs by party whips informing them of upcoming votes in parliament.
• (UK politics, by extension) The regular status of an MP within a parliamentary party, which can be revoked by the party as a disciplinary measure.
  "to withdraw the whip"

verb

• (transitive) To hit with a whip.
  "The rider whipped the horse."
• (transitive, by extension) To hit with any flexible object.
  "I whipped her with a newspaper."
• (transitive, slang) To defeat, as in a contest or game.
  "She whips me in the first game of pool, I do not even get a shot. Eight-balled from the break."
• (transitive) To mix in a rapid aerating fashion, especially food.
  "to whip eggs or cream"

noun

• (baseball) Acronym of walks plus hits per inning pitched; a statistic of the number of baserunners a pitcher has allowed per inning pitched.