To learn by experiencing the consequences of making mistakes.

(US, chiefly in the negative) To have a personal stake in the issue.

(politics, UK) In a house of legislature following the model of the Westminster system (such as the UK House of Commons), the parliamentary leader of the largest political party not forming the government.

plural of Leader of the Opposition

(idiomatic) Left to pure chance; based on a flippant metric.

To exist as an independent fact of (external) reality.

Alternative form of spoil the ship for a ha'p'orth of tar

plural of walk in the snow

The field of study dealing with how music works, typically examining the language and notation of music, the patterns and structures in composers' techniques, and so on.

(idiomatic) To take advantage of a profitable period.