Of things, qualities, etc.: Supreme, paramount; principal, greatest, or most notable.

At the head or top in importance; most important, influential, or active; principal, foremost, greatest. of things.

Of an event, action, plan, achievement, etc. Chiefly with the or a demonstrative: great or important above all others of the kind; chief, main, major.

Originally, qualifying commodity or words of similar meaning: Having a foremost place among the products exported by a country or place. Hence, in…