mid-14c., "stock of a crossbow," from Old French telier "stock of a crossbow" (c. 1200), originally "weaver's beam," from Medieval Latin telarium, from Latin tela "web; loom," from PIE *teks-la-, from root *teks- "to weave," also "to fabricate." Meaning "bar to turn the rudder of a boat" first recorded 1620s.
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<a href="https://www.etymonline.com/word/Rototiller">Etymology of Rototiller by etymonline</a>
Harper, D. (n.d.). Etymology of Rototiller. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/Rototiller