Definitions for quick study
Random House Webster's College Dictionary
a person who is able to learn or adapt to something in a short time or on short notice.
Category: Common Vocabulary
quick study, sponge(noun)
someone able to acquire new knowledge and skills rapidly and easily
"she soaks up foreign languages like a sponge"
an actor who is able to learn their lines in a short amount of time
one who is capable of learning at a fast pace; a fast learner