(v.) = roost ; perch ; poise. Ex: In the semi-arid central plateau, tortoises are commonly preyed upon by raptors, some of which roost on ledges in the backs of small rock shelters. Ex: The pinnacle is depicted as pointed probably because it can be attained temporarily but it is difficult to perch upon indefinitely. Ex: The birds were again skimming the water or were seen poised high above the tops of the tallest pines ready to make their swoops. ---- * posarse sobre = alight on/upon ; settle down on/onto.