parse OED
parse Cambridge Dictionary
...to examine or think about something carefully in order to understand it:...to examine computer data and change it into a form that can be easily read or understood
parse reddit
...Parsing is the process of turning one form of data (usually a string of text or numbers or whatever) into a data structure... "to parse" just means to extract information, usually syntactically, and assign it to something else.
For example, if you wanted to know the rules for making a law in the US you would have to "parse" the Constitution for that information.
In computer science "parsing" usually refers to a piece of software extracting information from a programming or markup language to convert to executable instructions or data.