any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks | joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc. |
a motor vehicle with four wheels; usually propelled by an internal combustion engine | capacitor having variable capacitance; used for making fine adjustments |
a device for overcoming resistance at one point by applying force at some other point | a machine that trims timber |
a group that controls the activities of a political party | a worker who thins out and trims trees and shrubs |
an intricate organization that accomplishes its goals efficiently | |
an efficient person | |