The term 'drop a line' is an idiom that means to communicate with someone, usually by writing a letter or email. The crossword solutions for this term are FISH (4 letters), DELE (4 letters), OMIT (4 letters), WRITE (5 letters), and EDIT (4 letters). FISH could refer to fishing for information, DELE could mean to delete something, OMIT could mean to leave something out, WRITE could mean to compose a message, and EDIT could mean to revise a message. Together, these words suggest the idea of communicating with someone by writing a letter or email.