verb

• (transitive) To imitate, especially in order to ridicule.
  "An artificial kidney these days still means a refrigerator-sized dialysis machine. Such devices mimic the way real kidneys cleanse blood and eject impurities and surplus water as urine."
• (biology, transitive) To take on the appearance of another, for protection or camouflage.

noun

• (fantasy, roleplaying games) A fictional monster able to disguise itself as an inanimate object, commonly a treasure chest, often with the intent of luring adventurers into a trap.

adj

• (mineralogy) Imitative; characterized by resemblance to other forms; applied to crystals which by twinning resemble simple forms of a higher grade of symmetry.