oneself, especially one's own well-being or interests: to look out for number one.
a person, company, etc., that is first in rank, order, or prestige: Our team is number one.
urination: used especially by or with reference to children.
of the highest in quality, status, importance, etc.; first-rate: a number one performance.
first in rank, order, or prestige: the number one book on the bestseller list.
Idioms about number one
make / do / go number one, Informal. to urinate: used especially by or with reference to children.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use number one in a sentence
We held the number one spot for three years straight before recently being overtaken by Bakersfield, California.
The series was viewed by more than 70 million households within its first month on the streaming service, and landed on the platform’s number one spot in their top 10 rankings across the globe, from Brazil to Germany to the Philippines.What to Know About the Literary Origins of Netflix’s Buzzy Crime Drama Lupin | Annabel Gutterman | June 11, 2021 | Time
With jaw-droppingly steep canyon walls that plunge for over a mile to the churning Colorado River below, it would be easy to assume that falling is the number one cause of death in this storied national park.
See for yourself why Feetures has become the number one running sock in America.How the Pandemic Is Teaching Us to Listen to Nature | Outside Editors | October 14, 2020 | Outside Online
Websites with more than 300 referring domains are much more likely to rank in the number one spot than, let’s say, a website with only 50 backlinks.Nine mistakes to avoid when contacting websites for backlinks | Raj Dosanjh | July 29, 2020 | Search Engine Watch
The musical promise of eternal youth sold to the tune of 5.5 million copies and five number-one singles.‘Prism’ Review: Katy Perry Perfects the Pop Blockbuster | Kevin Fallon | October 22, 2013 | THE DAILY BEAST
But after logging her eighth number-one single, Katy Perry might be the biggest pop star of her time.
My husband in my number-one priority and I his; why would we want to change this so we can be slaves to a child?Why I Choose to Be Child-Free: Readers Share Their Stories | Harry Siegel | February 27, 2013 | THE DAILY BEAST
But the number-one thing rats want to be around is people, people who drop garbage on the ground.
The voting portion of the contest ended yesterday, and I swept the number-one spot.
What does a first-class A-number-one lawyer like Root care about facts if they ain't in his favor?Worrying Won't Win | Montague Glass
Roger hurried along with Astro to the number-one boat and climbed inside.Stand by for Mars! | Carey Rockwell
And she said these was A-Number-One beagles, being sure to get a rabbit if one was in the country.Somewhere in Red Gap | Harry Leon Wilson
You've got thirty tons of fuel—you want to find the compression ratio of the number-one firing-tube chamber—so what do you do?Stand by for Mars! | Carey Rockwell
Among them was his number-one boy, Kwong, who had served him faithfully for several years.Civilization | Ellen Newbold La Motte
British Dictionary definitions for number one
informal the most important person; leader, chief: he's number one in the organization
informal the bestselling pop record in any one week
euphemistic the act or an instance of urination
a haircut in which the hair is cut very close to the head with an electric shaver
first in importance, urgency, quality, etc: number one priority
informal (of a pop record) having reached the top of the charts
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012