remora
/ˈremərə/noun
1- a slender marine fish which attaches itself to large fish by means of a sucker on top of the head. It generally feeds on the host's external parasites.
1.1
- Family Echeneidae: several genera and species, in particular the widespread Remora remora.科：数属, 数种, 尤指分布广泛拉丁名为Remora remora的品种。
词源
mid 16th cent.: from Latin, literally 'hindrance', from re- 'back' + mora 'delay' (because of the former belief that the fish slowed down ships).