We don't have synonyms for berks yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are perks, berk and jerks.
(n) :
(UK, postal) Abbreviation of Berkshire. [An inland county of England, , bounded by Oxfordshire, Buckinghamshire, Hampshire, Surrey, Greater London and Wiltshire.]
(n) :
(UK, postal) Abbreviation of Berkshire. [An inland county of England, , bounded by Oxfordshire, Buckinghamshire, Hampshire, Surrey, Greater London and Wiltshire.]