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The Best Internet Slang

A one

[ey wuhn] /ˈeɪ ˈwʌn/
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.
Also, A number one. Informal. first-class; excellent; superior:
The meals there are A one.
Also, A-one, A 1, A-1.
Origin of A one
1830-1840
First recorded in 1830-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for a-1
Contemporary Examples
Historical Examples
  • One instance each of a-1 and A1, and cooee and coo-e-e were retained.

  • a-1 is the distance from the working edge of the rail to the first dowel.

    Handwork in Wood

    William Noyes
  • "Your engine seems to be in a-1 condition," Bill was saying.

  • I can see you're an a-1 scout, good at observing and deducing and all that.

    Tom Slade at Black Lake Percy Keese Fitzhugh
  • She can rope and tie and brand it as quick as any man; She's voted by all cowboys an a-1 top cow hand.

    Cowboy Songs Various
  • Everything was a-1 of course; first-rate wines to choose from, and a rattling good cigar afterwards—for me, I mean.

    In the Year of Jubilee George Gissing
Word Origin and History for a-1

A-1

in figurative sense of "first-rate," 1837, in Dickens; from Lloyd's of London designation for ships in first-class condition (with the letter referring to the condition of the ship and the number to that of the stores).

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for a-1

A-1

adjective

a-number-1

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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