dry hole
(engineering) A hole drilled into the ground for oil or gas exploration which fails to yield enough oil or gas to justify the establishment of a well.
(archaic) psoriasis
(anatomy, obsolete) A strong ligament of the back of the neck in quadrupeds, connecting the back of the skull with dorsal spines of the cervical vertebrae; the nuchal ligament.
(chemistry) A substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds).
6週間の掘削の末、その場所は石油や天然ガスの探査のために掘られたが、油井を設けるほどの産出が得られなかった掘削孔であることが判明し、会社は渋々その場所を放棄した。
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