slack a EDD ~ sb3 4 for sense 3.
1 Cp SLACK v: phr slack off (1938 quot).
2 Also: of a field of ice: breaking up.
1902 Evening Telegram 19 Mar There is a large field of slack ice in sight [off Fogo]. [1937] 1983 FROUDE 11 [We steered away north] throu slack ice all the time until...we ran her into another block of ice which split the vessel in two. [1976] 1985 LEHR & BEST (eds) 65 "Fishing on the Labrador": But when we got there the ice hove us back,/Went up to Jigger Tickles the ice it was slack.
3 Also: of a still stretch of water in a stream, deep and slow-moving.
1986 SAUNDERS 80 Gull Steadies has these long stretches of low mud banks with slack water, the perfect place for muskrats.
