Lewis & Short

līlĭum, ĭi, n. [λείριον],

  1. I. a lily: lilium rosae nobilitate promixum est, Plin. 21, 5, 11, § 22; 21, 19, 74, § 126; Varr. R. R. 1, 35; Pall. Febr. 21, 3: candida, Verg. A. 6, 709: lucida, Prop. 3, 11 (4, 12), 30: argentea, id. 4, 4, 23: hiantia, Ov. A. A. 2, 115: breve, short-lived, that blooms but for a short time, Hor. C. 1, 36, 16: rubens, = κρίνον, a reddish kind of lily, Plin. 21, 5, 11, § 24.
  2. II. Transf., a sort of defence, consisting of several rows of pits, in which stakes were planted, rising only four inches above the surface of the ground, Caes. B. G. 7, 73, 8.