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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.
Perks definition, to become lively, cheerful, or vigorous, as after depression or sickness (usually followed by up): The patients all perked up when we played the piano for them. See more. Dictionary.com