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perk 1. v. perked, perkÂ·ing, perks. v. intr. 1. To stick up or jut out: dogs' ears that perk. 2. To carry oneself in a lively and jaunty manner. v. tr. To cause to stick up quickly: The dog perked its ears at the noise. adj. Perky.
MEK or Mek may refer to: 1  Methyl ethyl ketone (butanone), a solvent, used also to weld some plastics. 2  Mujahideen-e Khalq, the Iranian organization known in English as the People's Mujahedin of Iran. 3  MEK Compound, in Fallujah, Iraq, a large compound used by the U.S. military from 2003 to 2009.