Definition of fleak:
(n) :
A small, light piece that is only loosely joined to something else, and which has a tendency to detach.
(n) :
A thin piece that is chipped or peeled off from the surface of something else.
(n) :
A thin piece that the flesh of some animals (such as fish) tends to break into.
(n) :
(obsolete except British, dialectal) Synonym of flake.
(v) :
(transitive, obsolete, rare) Synonym of flake (“to remove (something) in fleaks or flakes (small chips or pieces)”).
(v) :
(ambitransitive, obsolete) Synonym of fleck.