a machine for sorting things (such as punched cards or letters) into classes | any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks |
a clerk who sorts things (as letters at the post office) | a motor vehicle with four wheels; usually propelled by an internal combustion engine |
| a device for overcoming resistance at one point by applying force at some other point |
| a group that controls the activities of a political party |
| an intricate organization that accomplishes its goals efficiently |
| an efficient person |