Source : Webster's Revised Unabridged Dictionary (1913)

Snivel \Sniv"el\, n. [AS. snofel. Cf. {Snivel}, v. i.]
   Mucus from the nose; snot.

Snivel \Sniv"el\, v. i. [imp. & p. p. {Sniveled}or {Snivelled};
   p. pr. & vb. n. {Sniveling} or {Snivelling}.] [OE. snivelen,
   snevelen, snuvelen, freg. of sneven. See {Sniff}, and cf.
   {Snuffle}.]
   1. To run at the nose; to make a snuffling noise.

   2. To cry or whine with snuffling, as children; to cry weakly
      or whiningly.

            Put stop to thy sniveling ditty.      --Sir W.
                                                  Scott.

Source : WordNet®

snivel
     n 1: whining in a tearful manner [syn: {sniveling}]
     2: the act of breathing heavily through the nose (as when the
        nose is congested) [syn: {snuffle}, {sniffle}]
     v 1: talk in a tearful manner [syn: {whine}]
     2: snuff up mucus through the nose [syn: {snuffle}]
     3: cry or whine with snuffling; "Stop snivelling--you got
        yourself into this mess!" [syn: {sniffle}, {blubber}, {blub},
         {snuffle}]
     [also: {snivelling}, {snivelled}]