1. Old High German slahan "to strike, slay" (see slay) => slag.
2. "splinter flying off when metal is struck".
3. slog, slug => slag (literally, 'hitting' rock to produce fragments).
4. slog, slug => slag, slaughter, slay, sledge, onslaught.
"refuse from smelting," 1550s, from Middle Low German slagge (German Schlacke) "splinter flying off when metal is struck," related to Old High German slahan "to strike, slay" (see slay (v.)).
slag (v.)
"denigrate," by 1971, from slag (n.) in a secondary sense of "worthless person" (1788). Related: Slagged; slagging.
权威例句
1. This material is variously termed ash, clinker, cinders or slag.
这种材料有不同的名称,如灰 、 炉渣 、 煤渣或矿渣.
2. All bands slag off their record companies. It's just the way it is.
所有乐队都会臭骂自己的唱片公司,都这样。
3. She was arrested and charged with being a common slag.
她被逮捕并受到以卖淫为业的指控。
4. In some cases the slag can be disposed of usefully.
有时炉渣能有用处.
5. Millions of tons of slag now go into building roads each year.