1N-COUNT (浴缸或水槽的)排水孔,出水口 A plughole is a small hole in a bath or sink which allows the water to flow away and into which you can put a plug. (浴缸或水槽的)排水孔,出水口 [British]
in AM, use 美国英语用 drain
2PHRASE [VERB inflects]失败;丢失;白白浪费 If you say that something has gone down the plughole, you mean that it has failed or has been lost or wasted. 失败;丢失;白白浪费 [British, informal]
Millions of pounds have gone down the plughole.
数百万英镑付诸东流。
Germans worry that their economy is going down the plughole.