the.com/parser

means A program (or part of one) that reads a stream of text or tokens and figures out its grammatical structure, usually to turn it into something a computer can act on.

from From 'parse,' which comes from the Latin phrase pars orationis — 'part of speech.' Medieval Latin grammar students learning to parse a sentence meant literally identifying which part of speech each word was. The word passed into English grammar-school vocabulary for sentence-diagramming, then got borrowed wholesale by computer science in the 20th century, when compiler builders needed a word for breaking code into its grammatical pieces — the old Latin classroom drill, now run by machines at full speed.