дупка

Etymology
Diminutive of.

Noun

 * 1) hole, pit
 * 2) gap, skip
 * 3) aperture, port, slot opening where another element is supposed to fit
 * 4)  cave, cavity, chasm (usually vertical)
 * 1) aperture, port, slot opening where another element is supposed to fit
 * 2)  cave, cavity, chasm (usually vertical)
 * 1)  cave, cavity, chasm (usually vertical)

Etymology
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Noun

 * 1) hole, cavity, gap
 * 2)  a person with no knowledge or skills (in a particular domain)