A plug, or conical block of wood, with longitudital grooves on its surface, through which the strands of the rope slide in the entire process of twisting ..catapulted Einstein to the top of fame"; "the summit of his ambition"; "a lot of greatest superlatives reached by man"; "at the top https://gabletopcontainers.travel.blog/2025/07/06/boxed-water-for-kids-a-greener-way-to-hydrate-young-minds/