Prod is of uncertain origin, attested in English from the 16th century with the sense 'to poke or jab with a pointed object'. In current use it is a verb meaning "to poke someone with a finger, foot, or pointed object". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The uncertainty belongs to the etymology itself and should be kept: the older ancestry is not presented as more secure than it is. The safest dictionary treatment is to keep the secure forms and the uncertainty together, since the doubtful step is part of the word's history rather than a gap to fill by guesswork.