ancipitous

英[æn'sipitəl;-təs]

a. 【植物学】(某些禾本科植物草茎)二棱形的, 剑形的, 二角的；两边的；变平的

a. Two-edged instead of round; -- said of certain\n flattened stems, as those of blue grass, and rarely also of leaves.