quad

• n.
  • one of four children born at the same time from the same pregnancy

    同义词： quadruplet

  • a muscle of the thigh that extends the leg

    同义词： quadriceps quadriceps femoris musculus quadriceps femoris

  • (printing) a block of type without a raised letter; used for spacing between words

    同义词： space

  • a rectangular area surrounded on all sides by buildings

    同义词： quadrangle

以上来源于: WordNet