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eclipser

noun
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eclips·​er | \ -sə(r) \
plural -s

Definition of eclipser

: one that eclipses specifically : the occulting screen for a lighthouse light

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“Eclipser.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/eclipser. Accessed 21 January 2020.

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