There was a black barge, or some other kind of superannuated boat, not far off, high and dry on the ground, with an iron funnel sticking out of it for a chimney and smoking very cosily; but nothing else in the way of a habitation that was visible to me.
There are no more uses of "superannuation" in the book.
Show samples from other sources
Bedeviled as they may have been at times by the dilemma of surplus population, the traditional slaveholders of the Western world were under Christian constraint to avoid anything resembling a "final solution" to solve the problem of excess labor; one could not shoot an expensively unproductive slave; one suffered with Old Sam when he grew superannuated and feeble, and let him die in peace.
William Styron -- Sophie’s Choice
The talk of setting aside a corner of the pasture for superannuated animals had long since been dropped.