The Collaborative International Dictionary of English v.0.48:
Moot \Moot\, v. t. [imp. & p. p. Mooted; p. pr. & vb. n.
Mooting.] [OE. moten, motien, AS. m[=o]tan to meet or
assemble for conversation, to discuss, dispute, fr. m[=o]t,
gem[=o]t, a meeting, an assembly; akin to Icel. m[=o]t, MHG.
muoz. Cf. Meet to come together.]
1. To argue for and against; to debate; to discuss; to
propose for discussion.
A problem which hardly has been mentioned, much less
mooted, in this country. --Sir W.
2. Specifically: To discuss by way of exercise; to argue for
practice; to propound and discuss in a mock court.
First a case is appointed to be mooted by certain
young men, containing some doubtful controversy.
3. To render inconsequential, as having no effect on the
practical outcome; to render academic; as, the ruling that
the law was invalid mooted the question of whether he
actually violated it.