adjective: Big or strong.
noun: Someone or something that is large.
From Roncesvalles, a town at the foot of the Pyrenees. It was the site of the Battle of Roncevaux Pass in 778 in which Roland, a commander of Charlemagne’s army, was defeated by the Basques. Over time the story turned into a legend and giant bones of prehistoric animals discovered there were claimed to be those of heroes slain at the battle. Earliest documented use: 1570.
"She was a big girl, a rouncival, Desroches called her."
Dolors Tool; Appetite for Murder; Breakwater Books; 2002.
"Gold ingots the size of rounceval peas, they say. Oh, and there’s another curious aspect to the legend."
Louis Bayard; The School of Night; Henry Holt and Co.; 2010.