We don't have synonyms for folkland yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are holland, foreland and falkland.
(n) :
(law, historical, UK) Land held in villeinage, being distributed among the folk, or people, at the pleasure of the lord of the manor, and taken back at his discretion.
(n) :
(law, historical, UK) Land held in villeinage, being distributed among the folk, or people, at the pleasure of the lord of the manor, and taken back at his discretion.