The term 'by heart' is used to describe the act of memorizing something, usually a poem or song, without having to look at it. The two crossword solutions for this term are 'ROTE' and 'frommemory'. ROTE is a four letter word that refers to the process of memorizing something through repetition and practice. Frommemory is a ten letter word that means to recall something from memory without any reference material.