"riptides" in the noun sense
1. rip, riptide, tide rip, crosscurrent, countercurrent
a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current
2. riptide, rip current
a strong surface current flowing outwards from a shore
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License