セツ, セチ, ふし, ぶし, のっと, たかし
node, season, period, occasion, verse, clause, stanza, honor, joint, knuckle, knob, knot, tune, melody
JLPT1 G4 S13 F934
As per 即# (immediately beside) + 竹 bamboo → knots of a bamboo tree in proximate alignment → *knot*; *joint*; *knob*; *section*. Also, *season* (← 1/24th of a year), *tune/melody* (← song punctuated by many stops) and *frugal* (← join segments in economizing).
[Full Kanji Etymology List]