"Y X. An object or process X mainly used to perform a process Y. See also . E.g. \"curry paste grinding\" \"curry paste grinding machine\"; \"weapon\" \"killing\"; \"fishing pole\" \"fishing\"; \"alcohol\" \"cleaning\"; but NOT \"knives\" \"felling\" (because knives are not primarily used for cutting down trees);"@en . . . "Is performed by means of"@en . . . .