a town of Portugal, in the district of Castello Branco, formerly included in the province of Beira; on the eastern slope of the Serra da Estrella, and on the AbrantesGuarda railway. Pop. (1900) 15,469. Covina, which has been often compared with a collection of swallows' nests clinging to the rugged granitic mountain side, is shaped like an amphitheatre of closely crowded houses, overlooking the river Zezere and its wild valley from a height of 2180 ft. Over 4000 operatives are employed in the manufacture of saragoQa, a coarse brown cloth worn by the peasantry throughout Portugal. The village of Unhaes da Serra (1507), 6 m. W.S.W., is noted for its sulphurous springs and baths.