ad·it

[ad-it]
noun
1.
an entrance or a passage.
2.
Also called entry. Mining. a nearly horizontal passage leading into a mine.
3.
an approach or access.

Origin:
1595–1605; < Latin aditus an approach, equivalent to ad- ad- + -i- (stem of īre to go) + -tus suffix of v. action

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World English Dictionary
adit (ˈædɪt) [Click for IPA pronunciation guide]
 
n
an almost horizontal shaft into a mine, for access or drainage
 
[C17: from Latin aditus an approach, from adīre, from ad- towards + īre to go]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Adit is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a stew of meat, vegetables, potatoes, etc.
Etymonline
Word Origin & History

adit
"entrance," c.1600, from L. aditus "approach, entrance," from pp. stem of adire "to approach," from ad- "to" + ire "to go," from PIE base *ei- "to go" (see ion).
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia

adit

a horizontal or near-horizontal passage driven from the Earth's surface into the side of a ridge or mountain for the purpose of working, ventilating, or removing water from a mine.

Learn more about adit with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The first, main adit appears to have been used as both a workshop and sleeping area.
From the adit two incline raises were excavated to the surface.
The gate on the lower adit is still in place and functioning, but the gate on the upper adit is in need of complete replacement.
The adit would be excavated back to competent material and a cement bulkhead would be constructed to seal off the entrance.
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