11:31:30karloszjcowan is right: in jackdaniel's link we have (hebrew) shekel ~ (latin/greek) sicl ~ (english) shekel
11:33:20karloszfor sickle the etymology is indeed from latin 'seco' to cut > latin 'sicilis' thing which cuts > english sickle
11:34:29karloszso the confusion here is actually that in latin 'sicl-' and 'sicil-' appear to be very similar but in fact there's an extra short i in the etymon for 'sickle', so they are distinct, but may have been merged in polish at some point. either way, different lines of descent
11:35:31karlosz(i won't proclaim myself as an 'expert', but im getting my masters in PIE historical linguistics right now, so maybe that counts for something)