- A-1
- /ay"wun"/, adj.See A one.Also, A 1.
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A-1 «AY WUHN», adjective.Informal. A one; first-rate.A 1,1. (of a ship) in the best condition (from a double symbol used originally by Lloyd's Register, “A” applying to the hull and “1” to the engines, rigging, and other operating equipment).
Useful english dictionary. 2012.