The Collaborative International Dictionary
Slatch
Slatch \Slatch\ (sl[a^]ch), n. [See Slack.] (Naut.)
The period of a transitory breeze.
An interval of fair weather.
The loose or slack part of a rope; slack.
Wiktionary
slatch
n. 1 The period of a transitory breeze. 2 An interval of good weather. 3 (context nautical English) The loose part of a rope; slack.