Slang. an area usually in front of a stage where people mosh at rock concerts.
Origin of mosh pit
First recorded in 1985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
informal an area at a rock-music concert, usually in front of the stage, where members of the audience dance in a frantic and violent manner
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012