Nerve gas, Weapon of chemical warfare that affects the transmission of nerve impulses through the nervous system.
According to Ryan Compton's Infinite Jest by the Numbers, Wallace used a vocabulary of 20,584 unique words to write the 577,608-word Infinite Jest. 10. 11. n+1 has a neat story about where the name for Michael Pemulis, Hal's drug-dealing friend at Enfield Tennis Academy, came from.
This is the Wiki for David Foster Wallace's Infinite Jest, published in 1996 by Little Brown. Besides using the page-by-page annotation, you can also read the reviews, or provide insights or observations. Special thanks to Andrew E. Mathis whose own IJ wiki was folded into this one.