英语词源字典 - 在线词源网站

brake (v.)[brake 词源字典]: "to apply a brake to a wheel," 1868, from brake (n.1). Earlier, "to beat flax" (late 14c.). Related: Braked; braking.[brake etymology, brake origin, 英语词源]
rake (v.): mid-13c., "clear (rubbish, grass, etc.) by raking; gather (grain) by raking," from rake (n.1), or from a lost Old English verb related to it, or from a similar Scandinavian source (compare Swedish raka, Danish rage "rake"). Of gunfire from 1630s. Related: Raked; raking. To rake in money or something like it is from 1580s.
bobsleigh: "A mechanically steered and braked sledge, typically for two or four people, used for racing down an ice-covered run", Mid 19th century (originally US, denoting a sleigh made of two short sleighs coupled together and used for hauling logs): from bob² in the sense 'short' + sleigh.