terrain
ter.rain \t*-'ra-n, te-\ n [F, land ground, fr. L terrenum, fr. neut. of terrenus of earth -] more at TERRENE 1a1: a geographical area : REGION 1a2: a piece of earth : GROUND 1b: the physical features of a tract of land : TOPOGRAPHY 2: TERRANE 3: ENVIRONMENT, MILIEU