noun
full ability; one's full potential
Rare literary word referring to a person's full ability or talent, often used in the context of giving someone a chance to demonstrate their capabilities. The expression 驥足を伸ばす means 'to give full play to one's ability'.
彼は新しい職場でようやく驥足を伸ばすことができた。
He was finally able to give full play to his abilities at his new workplace.