资料来源 : pyDict

围肛部; 尾节

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

Periproct \Per"i*proct\, n. [Pref. peri- + Gr. ? the anus.]
   (Zo["o]l.)
   The region surrounding the anus, particularly of echinoderms.