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