sny

noun4

1. •
   Upward curving observed in the planks of a wooden ship or boat.
2. •
   An upward curve at the edge of a plank.
3. •
   An upward curve in the lines of a wooden watercraft from amidships toward its bow and its stern.
4. •
   (no longer used) A small channel of water.

   • The word snye, sny or snie has been used for many years to describe a channel behind an island, with slack current or partly dried, or some such similar feature. — 1948

verb2

1. •
   (dialect) Abound, swarm, teem, be infested, with something

   • “And did you kill it?” “I did, for they’re a nuisance. The place is fair snied wi’ ‛em.” — 1913
2. •
   (no longer used, rare) To move, proceed.

noun1

1. •
   Initialism of sensitive needs yard (“part of a prison for prisoners who cannot safely be housed with the general population”).