A Moll was a girlfriend or woman companion so im guessing a slack moll would be a slack girlfriend/woman companion, probably sexist saying the woman was not doing the job properly or meeting the man's expectations.
There is no widely known term "slack moll." It could be a misspelling or a term from a specific context or dialect that is not widely recognized.
Slack as in "lacking firmness" is an adjective. Slack as in the action "to slack" is a verb. Slack is also used as a noun to describe a part of a rope or a bog. A verb is a word that describes either an action (walk, run, etc), an occurrence (become, happen, etc) or state of being (stand, exist, etc).
Both limp and slack can refer to lacking tightness or firmness. However, limp typically describes a lack of strength or vitality in something that should be firm or rigid, while slack often refers to something that is loose or hanging with excess material.
The idiomatic expression "to slack up" means to become less strict or diligent in one's work or efforts, to relax or ease up on something. It implies a decrease in effort or intensity.
The root meaning of "lax" comes from the Latin word "laxus," which means loose or slack. It describes something that is not strict or rigid in its enforcement or application.
The name "Slack" does not reflect a specific nationality as it is a common English surname that originated in medieval times. It is not tied to a particular country or region.
Randy Moll's birth name is Moll, Randall.
Biel Moll's birth name is Gabriel Moll Blanes.
Natasha Moll's birth name is Natasha Moll Padrn.
Richard Moll's birth name is Charles Richard Moll.
Roberto Moll's birth name is Roberto Moll Crdenas.
Moll's Mobil was created in 1967.
Moll Davis died in 1708.
Herman Moll died in 1732.
Moll Flanders was created in 1975.
Guy Moll was born in 1910.
Guy Moll died in 1934.
Toby Moll died in 1916.