Slidder

slid′ėr, v.i. to slip, slide.— adj. Slidd′ery , slippery. [A.S. slider i an , to slip, slid or , slippery:— slídan , to slide.] IMG:c352_Chambers_1908_Slide valves.png_utm_source_en.wiki source.org_utm_campaign_parser_utm_content_thumbnail:Chambers_1908_Slide valves.png-250px-Chambers_1908_Slide valves.png?utm_source=en.wiki source.org _campaign=parser _content=thumbnail