to slog or work one's guts out
1slog one's guts out — (informal) To work extremely hard ● gut …
2slog one's guts out — Vrb phrs. To work very hard …
3slog — 1 verb informal 1 slog (away) at especially BrE also slog through to work hard at something without stopping, especially when the work is boring or difficult: I ve been slogging away at this essay for days. | all those books we had to slog… …
4gut — 1 noun 1 COURAGE guts (plural) informal the courage and determination you need to do something difficult or unpleasant: Sonia succeeded through sheer guts and determination. | have the guts to do sth: No one had the guts to tell Paul what a… …
