2
general::
Phrase(s): *clear as crystal
1. Cliché very clear; transparent. (*Also: as ~.) • The stream was as clear as crystal. • She cleaned the windowpane until it was clear as crystal. 2. Cliché very clear; easy to understand. (*Also: as ~.) • The explanation was as clear as crystal. • Her lecture was not clear as crystal, but at least it was not dull.
McGrawhill's American Idioms And Phrasal Verbs