Piece of one's mind is an idiom that refers to expressing one's opinion or feelings. The crossword solutions for this term are LOBE (4 letters), IDEA (4 letters), OPED (4 letters), EARFUL (6 letters), and ESSAY (5 letters). LOBE is a part of the brain, and it can also refer to a rounded projection on an organ or body part. An IDEA is a thought or concept, while an oped is an opinion piece written by a columnist or guest writer for a newspaper or magazine. An earful is an informal expression meaning a lot of information or a long lecture, and an ESSAY is a short piece of writing on a particular subject. Together, these words represent the IDEA of expressing one's opinion or feelings.