Definitions
There is 1 meaning of the phrase
Knuckle Down.
Knuckle Down - as a verb
Example Sentences
"I need to knuckle down and finish this report tonight."
"She decided to knuckle down and study for the exam."
"It's time to knuckle down and start saving money for the vacation."
"The team needs to knuckle down and focus on winning the game."
"He finally decided to knuckle down and get serious about his fitness goals."