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driftage
drifter
driftwood
drill (1)
drill (2)
drill (3)
drill (4)
drill down
drill instructor
drill pipe
drill press
drill sergeant
drill string
drilldown
drilling platform
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drillmaster
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drill instructor

drill in·struc·tor (plural drill in·struc·tors)


noun 
Definition:
 
NCO in charge of recruits: a noncommissioned officer responsible for giving recruits their basic training

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