Webster’s Revised Unabridged Dictionary · 1913
Snack
Snack (snăk), n. [See Snatch, v. t.] 1. A share; a part or portion; — obsolete, except in the colloquial phrase, to go snacks, i. e., to share.
At last he whispers, "Do, and we go snacks." Pope.
2. A slight, hasty repast. [Colloq.]