All 3 Uses

circumstantial evidence
in
To Kill a Mockingbird
(Edited)

We don't know, but there is circumstantial evidence to indicate that Mayella Ewell was beaten savagely by someone who led almost exclusively with his left.
p. 232.1 *

circumstantial evidence = evidence that can suggest something, but does not prove it
He said he didn't have any quarrel with the rape statute, none what ever, but he did have deep misgivings when the state asked for and the jury gave a death penalty on purely circumstantial evidence.
p. 251.1
"But lots of folks have been hung— hanged— on circumstantial evidence," said Jem.
p. 251.2

Definitions:

(1) (circumstantial evidence)
evidence that can suggest something, but does not prove it

For example, if someone’s fingerprints are on a window that was broken during a burglary, that can suggest they were there. But it doesn’t prove they broke in—maybe they touched the window earlier for an innocent reason.
(2) (meaning too rare to warrant focus)