A one

American  

[ey wuhn] / ˈeɪ ˈwʌn /

Also A-one,

adjective

1. noting a vessel regarded by a shipping-classification society as being equipped to the highest standard and with equipment maintained in first-class condition.

2. Informal. Also A number one. first-class; excellent; superior.

   The meals there are A one.

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A-one Idioms  

1. Also, A-1; A-number-one. First-class, of the best quality, as in This is an A-one steak. The term comes from Lloyd's, the British insurance company, which in its 1775 shipping register designated the condition of a ship's hull by a letter grade (A, B, etc.) and of its cables, anchor, and other equipment by a number grade (1, 2, etc.). By the early 1800s A-1, the best possible grade, was being transferred to anything of superior quality.

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Etymology

Origin of A one

First recorded in 1830–40

Example Sentences

"If we wanted to start a family, we're going to be in a one‑bed flat until there's some kind of resolution."

From BBC

The Knights responded with an 11-0 run, knocking down three from beyond the arc, making it a one possession game, 46-43.

From Los Angeles Times

With land quality across Northern Ireland varying, he believes a "one size fits all" policy approach can make life harder.

From BBC

“Using claws is not a one and done,” said Wignall, adding that they can learn about a user and their preferences over time, gauge the effectiveness of what they are bringing back to the user and then use that to improve.

From The Wall Street Journal

"Growing state school rugby is a one step at a time process," said Beaumont.

From BBC