Null defect
pass between
principalities:
a pointlike kiss
"Back in April 1981, N. David Mermin wrote an article for Physics
Today, describing his successful battle
to introduce the word boojum
into the scientific literature. The term describes, appropriately, a
topological null defect."
and
and
"In the midst of the word he was trying to say,
In the midst of his laughter and glee,
He had softly and suddenly vanished away—
For the Snark was a Boojum, you see."
Based on the theme Through the rabbit hole proposed
on the Scifaiku list.