The rapid and regular on and off switching of a transponder, for recognition purposes

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An implement consisting of a heavy metal wedge-shaped head with one or two cutting edges and a relatively long wooden handle; used for chopping wood and felling trees.


Any knife, axe, or mechanical device for chopping or cutting an object into segments.


A drilling method that utilizes a chopping bit, with a water jet run on a string of hollow drill rods, to chop through soils and wash the cuttings to the surface. Also known as wash boring.

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