evert
/ɪˈvɜːt/verb
with obj.
- Biology or Physiology turn (a structure or organ) outwards or inside out【生或生理】使（构造, 器官）外翻：
as adj. everted the characteristic facial appearance of full, often everted lips.嘴唇丰满而且常常外翻的极具个性的脸庞。
派生词
eversible
adjectiveeversion
noun词源
mid 16th cent. （in the sense 'upset, overthrow'）： from Latin evertere， from e- （variant of ex-） 'out'+vertere 'to turn'. The current sense dates from the late 18th cent.