Tra từ slog - Từ điển Oxford Advanced Learner 8th

slog [slog slogs slogged slogging] verb, noun BrE [slɒɡ] NAmE [slɑːɡ]
verb (-gg-)(informal)
1. intransitive, transitive to work hard and steadily at sth, especially sth that takes a long time and is boring or difficult
•~ (away) (at sth) He's been slogging away at that piece of music for weeks.
•~ (through sth) The teacher made us slog through long lists of vocabulary.
•My mother slogged all her life for us.
•~ your way through sth She slogged her way through four piles of ironing.
2. intransitive, transitive to walk or travel somewhere steadily, with great effort or difficulty
•+ adv./prep. I've been slogging around the streets of London all day.
•~ your way through sth He started to slog his way through the undergrowth.
3. transitive, intransitive ~ (sth) (+ adv./prep.) to hit a ball very hard but often without skill
more at slog/sweat/work your guts out at ↑gut _n.
Verb forms:

Word Origin:
early 19th cent.: of unknown origin; compare with the verb ↑slug.
Idiom: ↑slog it out

noun uncountable, countable, usually singular
a period of hard work or effort
•Writing the book took ten months of hard slog.
•It was a long slog to the top of the mountain.

Word Origin:
early 19th cent.: of unknown origin; compare with the verb ↑slug.