Definify.com
Webster 1913 Edition
Sirloin
Sir′loinˊ
,Noun.
[A corruption of
surloin
. Not so called because this cut of beef was once jocosely knighted (dubbed Sir Loin) by an English king, as according to a popular story.] A loin of beef, or a part of a loin.
[Written also
surloin
.] Webster 1828 Edition
Sirloin
SIR'LOIN
,Noun.