leggja á minnið

Etymology
From, from and  and  the definite article accusative singular of.

Noun

 * 1)  to keep in mind, to memorise, to study, to learn

Usage notes

 * The thing or object which is being memorised or kept in mind is used between and  in the accusative form:
 * Við þurfum að leggja alla bókina á minnið fyrir prófið!
 * We need to memorise the whole book for the test.