29ac Projecting part of the wall, rampart,or other fortication allowing an increased angle of fire.(7) (ba?ti?n) 31ac Banded or cloudy form of chalcedony that fforms in rock cavities,commonly used as a gemsrine and in making pesties and mortars.(5) (a?a?e) 34ac Landing module carried by Nasa`s successful Apollo 11 moon mission in 1969.(5) (E?g?e) 38ac Hard silvery metallic element Chemically chiefiy used to harden steel alloys.(10) (?o?y??e??m)