In the long, windowless hall, with its double row of cubicles and its endless rustle of papers and hum of voices murmuring into speakwrites, there were quite a dozen people whom Winston did not even know by name, though he daily saw them hurrying to and fro in the corridors or gesticulating in the Two Minutes Hate.
There are no more uses of "gesticulate" in the book.
Show samples from other sources
The moderator turned her microphone off, leaving us to see her gesticulations, but not hear her words.
I couldn’t hear what they were saying or see their faces, but by their gesticulations, I’m sure they were angry at each other.