Definition of poke-nook in US English:

poke-nook

noun

English Regional, Scottish, Northern
  • A bottom corner of a bag, sack, etc. Frequently in extended use in phrases, as "one's own poke-nook": one's own means; "to pickle in one's own poke-nook": to rely on one's own resources.

Origin

Late 16th century; earliest use found in Robert Sempill (d. ?1595), poet and protestant controversialist. From poke + nook.

Pronunciation

poke-nook

/ˈpəʊknʊk/