The Collaborative International Dictionary of English v.0.48:

Blob \Blob\ (bl[o^]b), n. [See Bleb.]
   1. Something blunt and round; a small drop or lump of
      something viscid or thick; a drop; a bubble; a blister.
      --Wright.
      [1913 Webster]

   2. (Zool.) A small fresh-water fish (Uranidea Richardsoni);
      the miller's thumb.
      [1913 Webster]

WordNet (r) 3.0 (2006):

blob
    n 1: an indistinct shapeless form
    v 1: make a spot or mark onto; "The wine spotted the tablecloth"
         [syn: spot, fleck, blob, blot]

The Free On-line Dictionary of Computing (19 January 2023):

BLOB

   1. binary large object.

   2.  blitter object.

   [Jargon File]


The Jargon File (version 4.4.7, 29 Dec 2003):

BLOB


    1. n. [acronym: Binary Large OBject] Used by database people to refer to
    any random large block of bits that needs to be stored in a database, such
    as a picture or sound file. The essential point about a BLOB is that it's
    an object that cannot be interpreted within the database itself.

    2. v. To mailbomb someone by sending a BLOB to him/her; esp. used as a
    mild threat. “If that program crashes again, I'm going to BLOB the core
    dump to you.”