Both Uses

Adventures of Huckleberry Finn
in
The Adventures of Huckleberry Finn
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HUCKLEBERRY FINN By Mark Twain NOTICE PERSONS attempting to find a motive in this narrative will be prosecuted; persons attempting to find a moral in it will be banished; persons attempting to find a plot in it will be shot.†
Chpt Intr.

Huckleberry Finn = main character of Mark Twain's classic novel about Huck and Jim's journey down the Mississippi River to find freedom (1884)
HUCKLEBERRY FINN Scene: The Mississippi Valley Time: Forty to fifty years ago CHAPTER I. YOU don't know about me without you have read a book by the name of The Adventures of Tom Sawyer; but that ain't no matter.†
Chpt Intr. *

Definitions:

(1) (Adventures of Huckleberry Finn)
Mark Twain's classic American novel in which Huck and Jim travel down the Mississippi River seeking freedom from slavery and from an abusive, hypocritical society (1884)

Huck and Jim's journey to find freedom at many levels; for Jim, freedom from slavery; for Huck, freedom from an abusive father and from the intellectual and spiritual impoverishment of his time and place. Through their journey, Twain explores themes of conscience, friendship, and the conflict between what society says is right and what truly is right.
(2) (meaning too rare to warrant focus)