Pore
late Middle English: from Old French, via Latin from Greek poros ‘passage, pore’.
wiktionary
From Middle English pore, from Old French pore, from Latin porus, from Ancient Greek πόρος(póros, “passage”). Displaced native Old English swātþȳrel(literally “sweat hole”) and līcþēote(literally “body pipe”).
From Middle English poren, pouren, puren(“to gaze intently, look closely”), from Old English *purian, suggested by Old English spyrian(“to investigate, examine”). Akin to Middle Dutch poren(“to pore, look”), Dutch porren(“to poke, prod, stir, encourage, endeavour, attempt”), Low German purren(“to poke, stir”), Danish purre(“to poke, stir, rouse”), dialectal Swedish pora, pura, påra(“to work slowly and gradually, work deliberately”), Old English spor(“track, trace, vestige”). Compare also Middle English puren, piren(“to look, peer”). See peer.
etymonline
pore (v.)
early 13c., pouren, "gaze intently, look with close and steady attention or examination," a word of unknown origin, with no obvious corresponding word in Old French. Perhaps from an unrecorded Old English *purian, suggested by spyrian "to investigate, examine" (cognate with Old Norse spyrja) and spor "a trace, vestige." Especially, but not originally, "to read something with steady perseverance" (late 14c.), with on or over. Related: Pored; poring.
pore (n.)
late 14c., "minute opening, small orifice, or perforation" in the earth, a tree, the body of a human, animal, or insect, a bone, etc.," from Old French pore (14c.) and directly from Latin porus "a pore," from Greek poros "a pore," literally "passage, way," from PIE *poro- "passage, journey," suffixed form of PIE root *per- (2) "to lead, pass over."
