clean as a whistle
成語所屬單字whistle
clean as a whistle — 慣用語
1. completely clean; spotless.
1.慣用語
釋義
非常乾淨；一塵不染
completely clean; spotless.
例句
After scrubbing for an hour, the kitchen floor was clean as a whistle.
The mechanic said the engine was clean as a whistle and needed no repairs.