资料来源 : pyDict

张口,裂开

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

Dehisce \De*hisce"\, v. i. [L. dehiscere; de- + hiscere to
   gape.]
   To gape; to open by dehiscence.

资料来源 : WordNet®

dehisce
     v : burst or split open; "flowers dehisce when they release
         pollen"