■ noun
1》 a dark mark or stain, especially one made by ink.
2》 a thing that mars something that is otherwise good.
3》 Biochemistry a procedure in which proteins or nucleic acids separated on a gel are transferred directly to an immobilizing medium for identification.
■ verb ( ~s , ~ting , ~ted )
1》 dry with an absorbent material.
2》 mark, stain, or mar.
3》 ( ~ something out ) obscure a view.
↘disregard a painful memory or thought.
4》 Biochemistry transfer by means of a ~.
Phrases
~ one's copybook Brit. tarnish one's good reputation.
Origin
ME: prob. of Scand. origin and related to ON blettr .