רָתַךְ, Pi. רִיתֵּךְ to join, weld, rivet. Ab. Zar. 52ᵃ ר׳ כלי לע"ז if one welds a (broken) vessel for idolatrous purposes, contrad. to עשה. Sabb. 16ᵇ שברתן … ורִיתְּכָן וכ׳ she broke them (the silver vessels) and gave them to a silversmith, who welded and made them into new vessels. Ib. 52ᵇ; a. e.