As nouns the difference between rettery and rattery
is that rettery is a place or establishment where flax is retted while rattery is a place where rats are bred.
rettery
English
Noun
(
retteries)
A place or establishment where flax is retted.
- (Ure)
(
Webster 1913)
rattery
English
Noun
(ratteries)
A place where rats are bred.