keep one's hand in

Verb

To retain one's skill through regular practice.

Japanese Meaning

継続的な練習を通じて技術や腕前を維持する / 定期的な練習により、技能を保つ / 日々の練習で実力を切らさない

One must practice regularly to keep one's hand in.

腕を鈍らせないように、定期的に練習しなければならない。

Sense（1）

To retain one's skill through regular practice.

keeps one's hand in

（ present singular third-person ）

keeping one's hand in

（ participle present ）

kept one's hand in

（ participle past ）

kept one's hand in

（ past ）