number one
Share:
Tweet n. 1. One that is first in rank, order, or importance. 2. Slang One's own interests; oneself: watching out for number one. 3. Informal a. The act of urinating. b. Urine. adj. 1. First in rank, order, or importance: the number one team in the nation; our number one problem. 2. Foremost in quality; first-rate: bought some number one farmland. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.