"A first-rate talmid chacham, my grandfather was what was often called a kolboynik (a sort of Jewish Jack-of-all-trades), who served as the rabbi/chazzan/shochet/mohel and melamed in various small communities in England and Wales during the first half of the twentieth century." (source)

"The familiar attributes of the kibbutz dining room - a ceramic mural created by a local artist, a grand piano, a kolboynik (a small bowl for garbage on each table ), colored plastic trays and aluminum pans - all serve to arouse memories, the bittersweet madeleines of Israeli culture." (source)