| 释义 |
sheave
I. \ˈshiv, ˈshēv\ noun
(-s)
Etymology: Middle English sheve, shive sheave, slice; akin to Old High German scība disk, Icelandic skīfa disk, Latin scipio staff, Greek skipōn staff, Old English scēadan, scādan to divide, separate — more at shed
1. also sheeve \“\
a. : the grooved wheel or pulley of a pulley block or any of several such wheels
b. : any grooved wheel or pulley
c. : the eccentric disk of an eccentric
2. archaic : slice
II. \ˈshēv\ transitive verb
or sheaf \-ēf\
(-ed/-ing/-s)
Etymology: sheave from sheaf (I), after such pairs as English grief : grieve; sheaf from sheaf (I)
: to gather and bind into a sheaf
III. \ˈshēv\ intransitive verb
(-ed/-ing/-s)
Etymology: perhaps from Middle English scheven to shove, from Old English scēofan, alteration of scūfan — more at shove
: to reverse the action of the oars in rowing a boat : backwater |