retrorse

形容词 retrorse:

1. bent or curved backward or downward

re.trorse

adj.（形容词）
Directed or turned backward or downward.
后弯的，向下弯的：引向或转向后方或下方的

来源：
Latin retrôrsus
拉丁语 retrôrsus
from retrôversus
源自 retrôversus
retrô- [retro-]
retrô- [表示.向后.]
versus [past participle of] vertere [to turn] * see wer- 2
versus [] vertere的过去分词 [转] *参见 wer- 2

【引伸】
retrorse.ly
adv.（副词）