sin-laws - meaning and definition. What is sin-laws
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What (who) is sin-laws - definition

RITUAL CONSUMPTION OF FOOD/DRINK TO ABSOLVE THE SINS OF A DEAD PERSON
Sin-Eater; Sin eater; Sin-eating; Sin eating; Sineater; Sin Eater; Sin-eaters; Sin eaters

sin-laws      
The parent or parents of a person you are living-in-sin (cohabitating, shacking-up) with.
I have to go over my sin-laws' house this weekend with Suzie.
Laws (dialogue)         
PLATONIC DIALOGUE
The Laws; Plato's Laws; Laws (Plato); Cleinas; The Laws (Plato)
The Laws (Greek: Νόμοι, Nómoi; Latin: De LegibusHenri Estienne (ed.), Platonis opera quae extant omnia, Vol.
mortal sin         
SINFUL ACT WHICH CAN LEAD TO DAMNATION IF A PERSON DOES NOT REPENT OF THE SIN BEFORE DEATH
Mortal sins; Grave sin; Delictum gravius; Mortal Sins; Mortal Sin; Sin, Mortal; Grave matter
(mortal sins)
In the Roman Catholic Church, a mortal sin is an extremely serious sin and the person who has committed it will be punished after death unless they are forgiven by the Church.
N-VAR

Wikipedia

Sin-eater

A sin-eater is a person who consumes a ritual meal in order to spiritually take on the sins of a deceased person. The food was believed to absorb the sins of a recently dead person, thus absolving the soul of the person. Sin-eaters, as a consequence, carried the sins of all people whose sins they had eaten; they were usually feared and shunned.

Cultural anthropologists and folklorists classify sin-eating as a form of ritual. It is most commonly associated with Wales, English counties bordering Wales and Welsh culture.