blob

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A soft, amorphous mass.
• noun A daub, as of color.
• transitive verb To splash or daub with blobs; splotch.

from The Century Dictionary.

• noun A small globe of liquid; a dewdrop; a blister; a bubble; a small lump, splotch, or daub.
• noun The bag of a honey-bee.
• noun The under lip.
• noun A cottoid fish, Uranidea richardsoni, a kind of miller's-thumb.
• noun In cricket, no score; zero; a duck's-egg (which see).

from the GNU version of the Collaborative International Dictionary of English.

• noun Something blunt and round; a small drop or lump of something viscid or thick; a drop; a bubble; a blister.
• noun (Zoöl.) A small fresh-water fish (Uranidea Richardsoni); the miller's thumb.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A shapeless or amorphous mass; a vague shape or amount, especially of a liquid or semisolid substance; a clump, group or collection that lacks definite shape.
• noun dialect A bubble, a bleb.
• noun A small freshwater fish (Uranidea richardsoni); the miller's thumb.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an indistinct shapeless form
• verb make a spot or mark onto