Ancipital \An*cip"i*tal\, Ancipitous \An*cip"i*tous\, a. [L.
anceps, ancipitis, two-headed, double; an- for amb- on both
sides + caput head.] (Bot.)
Two-edged instead of round; -- said of certain flattened
stems, as those of blue grass, and rarely also of leaves.
[1913 Webster]