Plug Away is an idiom that means to work hard and persistently at a task. The crossword solutions for the term Plug Away are PLOD (4 letters), LABOR (5 letters), TOIL (4 letters), SLOG (4 letters), and SLAVE (5 letters). All of these words have similar meanings, which are to work hard and with dedication. PLOD means to walk slowly and heavily, LABOR means to work hard and with effort, TOIL means to work hard and continuously, SLOG means to work hard and steadily, and SLAVE means to work hard and without rest. All of these words can be used to describe the phrase Plug Away.