The story
1864 in American English, from the game of marbles.
Etymology from Wiktionary, CC BY-SA 4.0.
knuckle down
Today it means: To get to work; to focus on a task. Full definition →
Today it means: To get to work; to focus on a task. Full definition →
1864 in American English, from the game of marbles.
Etymology from Wiktionary, CC BY-SA 4.0.