ALL meanings of a one

a one
A a
  • noun a one first-class; first-rate; superior 3
  • adjective a one noting a vessel regarded by a shipping-classification society as being equipped to the highest standard and with equipment maintained in first-class condition. 1
  • adjective a one Also, A number one. Informal. first-class; excellent; superior: The meals there are A one. 1
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