The word louse (singular) becomes lice in its plural form through internal vowel change.

১. Similar to ‘mouse’ becoming ‘mice’, this is an irregular pluralization in English grammar.
২. ‘Louses’ is generally incorrect except in rare slang contexts for people, but ‘lice’ is the standard plural.
৩. The term refers to a small, wingless parasitic insect.

অতিরিক্ত তথ্য: Common irregular plurals include foot-feet, tooth-teeth, and goose-geese.