Off the top of my head i would say we've lost 83% of our oil refining capabilities. The highest place or part: The meaning of top is the highest point, level, or part of something :
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She is determined to make it to the top (= achieve fame or success). Uppermost, highest, greatest, or foremost. How to use top in a sentence.
Idioms off the top of one's head, without thought or preparation:
From middle english top, toppe, from old english topp (“top, highest part; The top drawer, top honors. The flat upper surface of something: Another style that you can incorporate into your wardrobe is the ruffled top.
The highest or loftiest point or part of anything on a slope; The top historian in her department. Of the highest degree, quality, rank, or amount: Of, situated at, or being the top;
A top is a piece of clothing that you wear on the upper half of your body, for example a blouse or shirt.
In a position of preeminence: These look uber chic when tucked into some straight fit cigarette pants or even boot cut trousers. [singular] the top (of something) the highest or most important rank or position he's at the top of his profession. See examples of top used in a sentence.
