drill and kill
n.— «Instead of a traditional worksheet of problems, known in teacherese as “drill and kill,” they were playing a game of dominoes, and learning at the same time.» —“Math all fun and games with new program” by Kathleen D. Bailey in Raymond Rockingham News (N.H.) Dec. 23, 2005. (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...