As a verb cottering
is present participle of cotter.
As a noun scottering is
the burning of a wad of pea straw at the end of harvest.
scottering
English
Noun
(-)
(UK, dialect, Herefordshire, obsolete) The burning of a wad of pea straw at the end of harvest.
References
* Francis Tebbs Havergal,
Herefordshire words & phrases, colloquial and archaic, about 1300 in number, current in the county .
(
Webster 1913)