Basic Guidelines For English Spellings
READ THESE ARTICLES
1The egg or young form of a louse or other parasitic insect, especially the egg of a human head louse attached to a hair.
2British A foolish person.
Look for and criticize trivial faults; nit-pick.
Old English hnitu, of West Germanic origin; related to Dutch neet and German Nisse.
Used as a warning that someone is approaching.
Keep watch or act as a guard.
Late 19th century probably from nix.