English

Definition of A1 Steak Sauce™ from the Oxford Advanced Learner's Dictionary

 

A1 Steak Sauce™

 
BrE
 
; NAmE
 
(abbreviation A1)
 
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a US popular brand of sauce which contains a mixture of spices and flavourings, is sold in tall bottles and is eaten especially with meat. The sauce was first made in 1824.