a. Obs. rare. [f. L. acūle-us + -OUS.] Needle-like, sting-like; aculeate.
1658. Sir T. Browne, Gard. Cyrus, II. 515. The aculeous prickly plantation, upon the heads of several common thistles.
1713. Derham, Physico-Theol., IV. xiv. 250. They have some aculeous Part or Instrument to terebrate, and make way for their Eggs.
