0 past simple and past participle of lower
2 to reduce something:
3 to behave in a way that makes people lose respect for you:
[ + to infinitive ] I wouldn't lower myself to respond to his insults if I were you.
She lowered her hand so that I could see what she was holding.
He had hoped to become a doctor, but he had to lower his sights after his disappointing exam results.
The doctor told me to sponge Erik down with cold water in order to lower his temperature.