A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
Origin of Phrases - A
A Number 1
It's an old (prior to 1800) nautical classification that the British used to identify sailing vessels. The letter A identifies the ship as being new or restored. The number 1 signifies that the vessel is in top shape.