a1
Word Rarity
Rare
Frequency: 3.64 in modern English
1
Scrabble Score
1
Letters
1
Syllables
1
Unique Chars
Meaning
adj
Alternative letter-case form of A1.
adj
First-class. (Compare A 2 and A 3, which are inferior grades.)
noun
Under the International Union of Railways (French: Union internationale des chemins de fer, UIC) classification system, a steam locomotive that has two coupled driving wheels followed by two trailing wheels, with no leading wheels; also called an 0-2-2.