Definitions
1.NounThe act or process of drilling.
Making holes in objects.
2.NounMaking holes in objects.
3.NounPerforming drills (exercises).
4.Verbpresent participle and gerund of drill
5.NounA long firearm with three barrels (typically a mix of shotgun and rifle barrels).
6.NounA heavy, twilled fabric of linen or cotton; drill.