Boarder
This depends more than most symbols on your associations – whether you have been a boarder in a school or lodging house, or other people’s home, or whether you take in boarders.
Lodger in other people’s home: Feeling of not having ones own security or home; sense of sharing or being welcome/unwelcome; feelings of being an outsider.
Boarder at school: Feeling abandoned by family; in a learning situation and one calling for independence.
In lodging house: Temporary situation; lack of personal resources or relationships; for some people represents a work situation.
Useful Questions and Hints:
What is the character and disposition of the boarder, and how does that relate to me?
Am I relying on someone else to provide my needs?
Is this about feelings of abandonment?
What are the main feelings in my dream and what part are those feelings playing in my waking life?
You could try Being the Person or Thing or even explore the Characters of People in Dreams.