Entry: restenotic (adj.)
In context: "...conveying his restenotic wife and entertainment-hungry children..."
Definition: This one takes a bit of tracking down. The OED doesn't have restenotic, but it does have restenosis (n.):
The recurrence of stenosis, esp. after corrective treatment; an instance of this.
...which leads us to stenosis (n.): The contraction or stricture of a passage, duct or canal.
Other: DFW kept word lists of terms he wanted to use. It feels like is one he just ended up kind of shoe-horning in.
SNOOT score: 1
Source: Oxford English Dictionary