Sentence:  The safe at Ingleside District Station stands next to the gum <WSD>machine</WSD> in a narrow passageway that leads to Captain Harris 's office ( to the left ) , the lieutenant 's office ( farther along and to the left ) and the janitor 's supply closet ( straight ahead ) . 
Meaning of the word marked with <WSD> tags:  any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks