D defs.my
Entry 4 senses Webster, 1913

Cirrus

/sĭr'-əs/ · Cir·rus · IPA /ˈsɪɹəs/
01 n. A tendril or clasper.
pl. Cirri ((#))
  1. 1.
    A tendril or clasper.(Bot.)
  2. 2.
    A soft tactile appendage of the mantle of many Mollusca, and of the parapodia of Annelida. Those near the head of annelids are Tentacular cirri; those of the last segment are caudal cirri.(Zool.)
  3. 3.
    The external male organ of trematodes and some other worms, and of certain Mollusca.(Zool.)
  4. 4.
    See under Cloud.(Meteor.) See: Cloud