To what does the word "parsec" refer?
A parsec is an astronomical unit of length used to measure large distances to objects outside the Solar System. One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond. A parsec is equal to about 3.26 light-years, in other words, 31 trillion kilometres or 19 trillion miles. The other answers suggested relate to similar-sounding words:
"Parse" is a term used in the analysis of computer languages, referring to the syntactic analysis of input code
"Parsee" is one of two Zoroastrian communities primarily located in South Asia. Zoroastrianism is an ancient religion of Persia.
"Barsac" is a commune in the Gironde department of southwestern France that gives its name to a famous sweet wine.