Plag is likely misspelled.
Plag has no English definition.
As a verb plaw is
to boil; seethe.
As a noun plaw is
a boiling.
plaw
English
Alternative forms
* (l)
Verb
(
en verb)
To boil; seethe.
To boil; boil slightly; parboil.
Noun
(
en noun)
A boiling.
- give meat a plaw