subs. phr. (old).—A hanger-on; a toady. As adj. = to SPONGE (q.v.).

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  1557.  TUSSER, Five Hundred Pointes of Good Husbandrie, 188.

        Ere tongue be too free,
  or SLAPSAUCE be noted too saucie to bee.

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  1653.  URQUHART, Rabelais, I. xxv. Calling them … SLAPSAUCE fellows, slabberdegullion druggels, lubbardly louts, &c.

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