The Collaborative International Dictionary of English v.0.48:

Blubber \Blub"ber\, n. [See Blobber, Blob, Bleb.]
   [1913 Webster]
   1. A bubble.
      [1913 Webster]

            At his mouth a blubber stood of foam. --Henryson.
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   2. The fat of whales and other large sea animals from which
      oil is obtained. It lies immediately under the skin and
      over the muscular flesh.
      [1913 Webster]

   3. (Zool.) A large sea nettle or medusa.
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The Collaborative International Dictionary of English v.0.48:

Blubber \Blub"ber\, v. i. [imp. & p. p. Blubbered; p. pr. &
   vb. n. Blubbering.]
   To weep noisily, or so as to disfigure the face; to cry in a
   childish manner.
   [1913 Webster]

         She wept, she blubbered, and she tore her hair.
                                                  --Swift.
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The Collaborative International Dictionary of English v.0.48:

Blubber \Blub"ber\, v. t.
   1. To swell or disfigure (the face) with weeping; to wet with
      tears.
      [1913 Webster]

            Dear Cloe, how blubbered is that pretty face!
                                                  --Prior.
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   2. To give vent to (tears) or utter (broken words or cries);
      -- with forth or out.
      [1913 Webster]

WordNet (r) 3.0 (2006):

blubber
    n 1: an insulating layer of fat under the skin of whales and
         other large marine mammals; used as a source of oil
    2: excess bodily weight; "she disliked fatness in herself as
       well as in others" [syn: fatness, fat, blubber,
       avoirdupois] [ant: leanness, spareness, thinness]
    v 1: cry or whine with snuffling; "Stop snivelling--you got
         yourself into this mess!" [syn: snivel, sniffle,
         blubber, blub, snuffle]
    2: utter while crying [syn: blubber, blubber out]