(colloquial, UK, chiefly North Country and Yorkshire) A slovenly woman.

(informal) To be deliberately unproductive in one's work or study. / To decrease in intensity; to ease off; to diminish; to die down.

A time, at the turn of the tide, when the water is calm. / A stretch of seawater in which there are no currents, or of a river impeded by a lock or dam.

Careless and inactive; lacking focus or initiative. / Done carelessly; slapdash. / Having or done with hands that are slack.

Done with hands or wrists that are slack. / Idly or carelessly.

A collection of slack-handed people.

The quality or state of being slack-handed.

Alternative spelling of slack-key

(music) (of a string instrument or a manner of playing one) Performed with loosened strings, such that all of the strings play in the same key (most often G major).

plural of slack tub