All 5 Uses

inquest
in
The Hound of the Baskervilles
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The circumstances connected with the death of Sir Charles cannot be said to have been entirely cleared up by the inquest, but at least enough has been done to dispose of those rumours to which local superstition has given rise.†
Chpt 2

inquest = formal investigation
I checked and corroborated all the facts which were mentioned at the inquest.†
Chpt 2 *
But one false statement was made by Barrymore at the inquest.†
Chpt 2
He only repeated what some fool had said at the inquest.†
Chpt 3
I know something, Sir Henry, and perhaps I should have said it before, but it was long after the inquest that I found it out.†
Chpt 10

Definitions:

(1) (inquest)
a formal inquiry or investigation -- typically into the cause of an undesirable event -- often an investigation of an unexpected death
(2) (meaning too rare to warrant focus)