What is the meaning of Louse?

A small parasitic wingless insect of the order Psocodea.

A contemptible person; one who is deceitful or causes harm.

To remove lice from; to delouse.

inflection of lousar:

1. first/third-person singular present subjunctive
2. third-person singular imperative

first/third-person singular present subjunctive

third-person singular imperative

alternative form of lous

Source: wiktionary.org