リュウ, ル, なが.れる, なが.れ, なが.す, なが.す, な, ながれ, めぐる
current, a sink, flow, forfeit
JLPT3 G3 S10 F280
㐬# is as per ?as described in 育 (newborn baby) + 川 river (→ flowing water) → flow of amniotic fluid accompanying a fetus passing through the birth canal. The further addition of 水 water is to expand the scope of the term to that of a heavy *flow* of water → *float*; *pour* → *trendy*; *school* (of thought, art etc.); *style*; *rank*; *grade*. Other extended meanings include *wash off/away*; *circulate*; *wander*; *passage* (of time); *descent*; *distribute*; *divert*; *stroll*; *cruise*; and (a) *sink*.
[Full Kanji Etymology List]