As to the other, first hits I found when I googled the respective definitions of "undefined" and "indefinite: "

undefined [??nd??fa?nd] adj
not defined or made clear the job has remained undefined
undefinable adj

in·def·i·nite (n-df-nt)
adj.
Not definite, especially:
a. Unclear; vague.
b. Lacking precise limits: an indefinite leave of absence.
c. Uncertain; undecided: indefinite about their plans.

Note that both definitions lead off with "not defined/ite" and "not clear/unclear. " Note also that no meaning of the latter conveys the sense of "canceled or reversed. " Usage in parliamentary procedure doesn't really have much force to alter that: After a failed filibuster of a Clinton judicial nominee former Majority Leader Bill Frist once introduced a "motion to postpone the vote" on confirmation; despite the language, it was no postponement but a (successful) attempt to kill the vote entirely, and the judge in question was later reappointed by Clinton during a Congressional recess. That legislators routinely take liberties with plain language is no secret, nor reason to revise the meaning of said language.

http://www.thefreedictionary.com/indefinite

http://www.thefreedictionary.com/undefined