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Meaning of eye tube in English:

eye tube

noun

  • 1The tube of the eyepiece in a telescope or microscope.

  • 2Zoology
    A tubular eye found in jumping spiders, containing a series of lenses and four layers of photoreceptors.

Origin

Mid 18th century; earliest use found in Nevil Maskelyne (1732–1811), astronomer and mathematician.