キュウ, ふる.い, もと

old things, old friend, old times, former, ex-

JLPT0 G13 S0 F5000

萑 is 隹 short, squat bird + 艸 grass/plant (here acting as a shape indicator, suggesting the curvature of a pair of ears) → horned owl. adds # (stooped) → owl (← bird of a stooped appearance) → *bent with rot* (compare ) → *old*; *former* → *old friend*.

[Full Kanji Etymology List]