What is the frightening question Winston hesitates to ask?literacy term

Winston seems to hesitates asking when he will meet up
with O'Brien again in Book 2, chapter 7. At this point he mentions "the place where
there is no darkness." At that point O'Brien seems to get the idea that Winston is using
an allusion (possibly the literary term you are looking for). O'Brien agrees at that
point which is foreshadowing because they do later meet in
"the place where there is no darkness."

You cite Book 3,
chapter 2. This is where they meet in the light, the light of what seems to be an
interrogation room.

By the end of this chapter, Winston is
given the chance to ask any questions he wants to. He asks a few, but the one he really
wanted to ask evaded him for a while. Finally, Winston
asks:

'What is
in Room 101?'

The expression on O'Brien's face did not change. He
answered drily:

'You know what is in Room 101, Winston. Everyone
knows what is in Room
101.'

This may be a reference
to the literacy term because Room 101 might be an allusion to learning. All entry level
college classes start with the number 101. After you pass the 101 you can go
on.

I hope that helps, your idea of a literary term is
confusing as to what you are looking for.