The story you may have heardThe extracted draft ran Hebrew deqel → Arabic daqal → Greek dáktylos, as if the fruit's name were Hebrew. Hebrew deqel, Aramaic diqlā and Arabic daqal are cognates, not stages in a chain, and the Greek word is the ordinary word for 'finger'. Wiktionary and Etymonline suggest a Semitic palm name may have nudged Greeks to call the fruit 'finger' (folk etymology), but no text confirms it: a possibility, not a pedigree.