An implement, an instrument or apparatus designed (or at least used) as a means to a specific end, especially
An attachment, a piece of equipment to adapt another tool or machine to a specific purpose.
A non-manual apparatus or device, powered electrically or by another small motor, used in homes to perform domestic functions (household appliance) and/or in offices.
Used other than figuratively or idiomatically: see drilling, rig.
An oil rig.