The term 'phone attachment' can be broken down into four crossword solutions: SOUSA (5 letters), CORD (4 letters), EAR (3 letters), and MEGA (4 letters). SOUSA is an acronym for the United States Marine Band, which was founded by John Philip Sousa in 1892. CORD is a short form of the word 'corded, ' which refers to a telephone that is connected to a wall outlet with a CORD. EAR is an abbreviation for 'earpiece, ' which is a device worn over or in the EAR to allow a person to hear sound from a phone. Finally, MEGA is an acronym for 'MEGAPHONE, ' which is a device used to amplify sound. All of these terms are related to phone attachments, and together they provide a comprehensive overview of the various components associated with phones.