Rashi on TanakhPsalms 129

the plowmen...they lengthened their furrow That is the hill of the plowshare, as (I Sam. 13: 14): “about half a furrow (מענה) [which] a yoke [of oxen plow in] a field.”

which, before it is plucked, withers Which, before they pluck it and uproot it from its place, is withered.

his arm Like (Isa. 49:22): “and they will bring your sons in [their] arms (בחצן),” aisselle in French, and so (Neh. 5:13): “Also I shook out my arm (חצני).”