Real Dictionary

landlady
countable noun: Someone's landlady is the woman who allows them to live or work in a building which she owns, in return for rent.
countable noun: The landlady of a pub is the woman who owns or runs it, or the wife of the person who owns or runs it.

landlady in American English
a woman who rents or leases land, houses, etc. to others
noun: a woman who owns and leases an apartment, house, land, etc., to others

landlady in British English
noun: a woman who owns and leases property