TELESCOPE

I. noun Usage: often attributive see: spy Date: 1648 a usually tubular optical instrument for viewing distant objects by means of the refraction of light rays through a lens or the reflection of light rays by a concave mirror, any of various tubular magnifying optical instruments, radio ~ , II. verb (-scoped; -scoping) Date: 1867 intransitive verb to become forced together lengthwise with one part entering another as the result of collision, to slide or pass one within another like the cylindrical sections of a collapsible hand ~, to become compressed or condensed, transitive verb to cause to ~, compress , condense