As verbs the difference between belock and relock
is that belock is (obsolete|transitive) to lock, or fasten as with a lock while relock is to lock again.
belock
English
Verb
(
en verb)
(obsolete) To lock, or fasten as with a lock.
* Shakespeare, Measure for Measure
- This is the hand, which, with a vow'd contract, was fast belocked in thine.