TgO Ex31:4 :לְאַלָפָא אוּמנָוָן"אוּמַנְוָן" לְמַעְבַד בְדַהבָא בְכַספָא וֻבִנחָשָא‏ : to teach crafts: to work in gold, silver, and bronze
See the entire entry for ˀummānū, ˀummānūṯā n.f. trade, skill, craft