noscitur a sociis

noun | \ ˈnō-si-tər-ˌā-ˈsō-sē-yəs, ˈnō-skē-ˌtu̇r-ˌä-ˈsō-kē-ˌēs \ | no·sci·tur a so·ci·is
  1. : a doctrine or rule of construction: the meaning of an unclear or ambiguous word (as in a statute or contract) should be determined by considering the words with which it is associated in the context