A one

[ey wuhn]


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

First recorded in 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for a-1

Contemporary Examples of a-1

Historical Examples of a-1

  • 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.

Word Origin and History for 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