cert Share definition Flag When the Supreme Court of the United States agrees to hear a case. Short for the latin "certiorari" meaning "to send up the record." We were happy to hear the Supremes granted cert in Lawrence v. Texas. cert by J. Muskratt June 17, 2005 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug