an imaginary sea creature that has a woman's head and upper body and a fish's tail instead of legs
Nereid, Oceanid, sea-maid(or sea-maiden), siren, water nymphdryad, hamadryad, naiad, nymph, oread, wood nymph
in the 14th century
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。