A more thorough explanation:

TERCER

TERCER is a term used in Scots law to refer to a widow who has a legal right to one-third of her deceased husband's real property.

For example, if a man owned a house and some land, his widow would have a legal right to one-third of the value of that property after his death. This means that if the property was sold, she would be entitled to one-third of the proceeds.

Another example would be if the man had multiple properties, the widow would have a legal right to one-third of the total value of all the properties combined.

The term TERCER is used to describe the legal right of a widow to inherit one-third of her deceased husband's real property. This means that the widow has a legal claim to a portion of the value of the property, which can be in the form of money or other assets. The examples illustrate how this legal right works in practice, showing how the widow's entitlement is calculated based on the value of the property or properties owned by the deceased husband.