Reference meaning
a1
Last updated
In good health.
Other meanings
2. adjective
In excellent or top condition.
3. adjective
First-class. (Compare A 2 and A 3, which are inferior grades.)
4. 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.
Source and scope
This definition is reproduced from English Wiktionary, sense en-A1-en-adj-NQ77IMnm, under the CC BY-SA 4.0. It has not yet received VocabularyBase editorial review. Read the source and license details.