We don't have synonyms for inlock yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are unlock, enlock and inlook.
(n) :
(law, UK dialectal, Northern England) Any corner or part of a common field plowed up and sowed with oats, etc. and sometimes fenced in with a dry hedge while the lave of the field lies fallow and common.
(n) :
(law, UK dialectal, Northern England) Any corner or part of a common field plowed up and sowed with oats, etc. and sometimes fenced in with a dry hedge while the lave of the field lies fallow and common.