(aka: "duffer" or "hacker") an erratic and/or unskilled golfer whose technique often results in large divots being left on the fairway
an aircraft without wings that obtains its lift from the rotation of overhead blades
Mirror inside the ISOPHOT instrument that switches between the source position and an adjacent position such that alternatingly the emission from the source and background together and background alone is measured
A natural pebble with a crude, steep cutting edge formed by unifacial percussion flaking
A large, often crude pebble, cobble, or core tool percussion-flaked to form an axe-like cutting edge along part of its margin; used for diverse chopping and cleaving work (Moratto 1984: 587)
- Originally, a motorcycle that has had all non-essential parts removed (or "chopped") to make it lighter and faster Today, this name generally applies to custom built motorcycles that may have a rigid frame (no rear suspension), an extended fork, and a stretched or elongated appearance
A chopper is a helicopter. Overhead, the chopper roared and the big blades churned the air
A device used to interrupt the path of radiation, as a beam of light, from a single source or to alternate it between two sources
An internal circuit in some adjustable frequency drives which regulates output voltage by quickly turning on and off the power applied to the output section of the drive Drives which use a chopper to control output voltage commonly use a diode bridge rectifier input section