Term
computer science nerds use to describe how
spellcheck dictionaries work. Pronounced "tree" even though there's a whole bunch of other things in computer science that are actually known as "trees".
CS types aren't very creative, as it turns out.
With a
trie, you can store almost every single word in the English language with only a few
layers of
nodes. Just make sure people don't think you're saying "tree" or they'll get autistic.