ショ, チョ, お, いとぐち, ほ

thong, beginning, inception, end, cord, strap

JLPT3 G7 S14 F952

As per # (pile) + thread → threads piled on a spool → *link*; *preface*; *cord* → *beginning/end*; *protruding part of an object* (← tip of spooled thread) → *clue*; *continuum* (← tip that leads to the center or core).

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