Etymology
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*gwhi- 
*gwhī-, Proto-Indo-European root meaning "thread, tendon."

It forms all or part of: defile (n.) "narrow passage;" enfilade; filament; file (v.1) "place (papers) in consecutive order for future reference;" filigree; filipendulous; fillet; profile.

It is the hypothetical source of/evidence for its existence is provided by: Avestan jya- "bowstring;" Latin filum "a thread, string;" Armenian jil "sinew, string, line;" Lithuanian gysla "vein, sinew;" Old Church Slavonic zila "vein."
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*ghere- 

*gherə-, Proto-Indo-European root meaning "gut, entrail." 

It forms all or part of: Chordata; chordate; chord (n.2) "structure in animals resembling a string;" chorion; cord; cordon; harpsichord; haruspex; hernia; notochord; yarn.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit hira "vein; band;" Latin hernia "rupture;" Greek khorde "intestine, gut-string;" Lithuanian žarna "guts, leather bag;" Old English gearn, Old High German garn "yarn" (originally made of dried gut), Old Norse gorn "gut."

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