| 词源 |
cultellation n."the determination of the exact point on the ground vertically beneath a point at some height above it, by letting fall a knife or other pointed object," 1700, from Latin cultellus "small knife," diminutive of culter "knife, plowshare," from PIE *kel-tro-, suffixed form of root *skel- (1) "to cut." updated on September 13, 2018 |