blobPronunciation: /blɒb/Translate blob | into French | into German | into Italian | into Spanish Definition of blob noun a drop of a thick liquid or viscous substance:blobs of paint a spot of colour:the town is much more than a brown blob on the map an indeterminate roundish mass or shape:a big pink blob of a face was at the window informal a score of 0 in a game: he made a string of blobs then hit a hundred verb (blobs, blobbing, blobbed) [with object] put small drops of thick liquid or spots of colour on:her nose was blobbed with paintDerivatives blobby adjective (blobbier, blobbiest)Origin: late Middle English (denoting a bubble): perhaps symbolic of a drop of liquid; compare with blotch, blubber1, and plopblob in other Oxford dictionaries Definition of blob in the US English dictionary