| 词汇 | rudder |
| 词根词缀 | 词源： O.E. roðor "paddle, oar," from P.Gmc. *rothru- (cf. O.Fris. roder, M.L.G. roder, M.Du. roeder, Du. roer, O.H.G. ruodar, Ger. Ruder "oar"), from *ro- "steer" (see row (2)) + suffix -þra, used to form neutral names of tools. Meaning "broad, flat piece of wood attached to the stern of a boat and used for steering" is from c.1300. Spelling with -d- for -th- first recorded 1440. |
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