资料来源 : Webster's Revised Unabridged Dictionary (1913)

Cardo \Car"do\ (k[aum]r"d[-o]), n.; pl. {Cardines}.) [L., a
   hinge.] (Zo["o]l.)
   (a) The basal joint of the maxilla in insects.
   (b) The hinge of a bivalve shell.