1. A self-important or boastful person.
From Middle English cock (rooster), of imitative origin. Earliest documented use: 1715.
“Sam also has to deal with a cockalorum fellow actor who shares just enough to demoralize him.”
Rohan Preston; ‘Fully Committed’ is Fully Glorious; Star-Tribune (Minneapolis, Minnesota); Jul 25, 2003.
“Once a comic space cowboy full of cockalorum, Spider One has refashioned himself into an advocate for our nation’s impressionable youth.”
Friendly Fire; The Boston Globe; May 28, 2003.