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Webster 1913 Edition

Noun.

One who has shaken off restraint; a prodigal.

[Obs.]

Cotgrave.

Noun.

[slip and string.] One that has shaken off restraint; a prodigal; called also slopthrift, but I believe seldom or never used.

slipstring ‎(plural slipstrings)

(obsolete) One who has shaken off restraint; a prodigal.
(Can we find and add a quotation of Cotgrave to this entry?)