As a proper noun lock
is .
As a noun brake is
a fern; bracken or
brake can be a thicket, or an area overgrown with briers etc or
brake can be a tool used for breaking flax or hemp or
brake can be (
label) an ancient engine of war analogous to the crossbow and ballista or
brake can be (obsolete) a cage.
As a verb brake is
to bruise and crush; to knead or
brake can be to operate (a) brake(s) or
brake can be (
lb) (
break).