A person who owns or rents a house and is responsible for it. The householder was busy preparing the house for the upcoming family gathering.
The head of a household, typically the person who provides the primary financial support. As the householder, she made sure all the bills were paid on time.
In Hinduism, Buddhism, and Jainism: a layperson who follows the domestic life, as distinguished from a monk or ascetic. The Buddha offered guidance to both monks and householders in his sermons.