ridger
/rɪdʒə/(also redger)
noun
1A broad strap or chain passing over a cart saddle, and serving to support the shafts; = ridge-band. In later use chiefly English regional ( southern ).
2 Agriculture. An implement for ridging soil.
Origin
Mid 18th century; earliest use found in William Ellis (c1700–1758), agriculturist and writer. Partly from ridge + -er, and partly from ridge + -er.