As adjectives the difference between blockable and lockable
is that blockable is able to be blocked while lockable is capable of being locked.
lockable
English
Adjective
(
-)
Capable of being locked.
*1987 , Henry P Coppolillo, Psychodynamic Psychotherapy of Children
*:A desk for personal use with a file drawer that can be locked or a separate lockable file are (SIC) also a necessity.
Antonyms
*unlockable