Drill has multiple meanings depending on the context. According to Merriam-Webster, drill can mean "to fix something in the mind or habit pattern of by repetitive instruction". It can also refer to the act of making a hole with a drill. In street slang, "drill" means to fight or retaliate, and "can be used for anything from females getting dolled up to all-out war in the streets". In the music industry, drill is a subgenre of hip hop music that originated in Chicago in the early 2010s. Drill music is sonically similar to the trap music subgenre and lyrically similar to the gangsta rap subgenre. Drill lyrics tend to be wary and callous, and early drill artists are noted for their explicit, confrontational style of lyricism and association with crime in Chicago, especially the Black Disciples and Gangster Disciples.