To slide or pass one within another, after the manner of the sections of a small telescope or spyglass; to come into collision, as railway cars, in such a manner that one runs into another.(adjective)
source: webster1913
Capable of being extended or compacted, like a telescope, by the sliding of joints or parts one within the other; telescopic; as, a telescope bag; telescope table, etc.(adjective)
source: webster1913
noun (n)
a magnifier of images of distant objects(noun.artifact)