a house owned by an employer and let to an employee for the duration of their employment
The farmer employs five workers and provides a tied cottage rent free for each.
a public house (=a pub where people go to drink, eat and socialise) owned by or under contract to a brewery or pub company. A tied cottage must buy at least some of its beer from a particular brewery or pub company. Also called a tied house.
The pub is a tied cottage, so the landlord must buy his ales from the brewery.