a relatively smooth interval between heavy seas.
Origin of slatch
First recorded in 1595–1605; obscurely akin to slack1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for slatch
Historical Examples of slatch
Slatch, slach, n. the slack of a rope: an interval of fair weather: a short breeze.