What is the meaning of Daub?

Excrement or clay used as a bonding material in construction.

A soft coating of mud, plaster, etc.

A crude or amateurish painting.

To apply (something) to a surface in hasty or crude strokes.

To paint (a picture, etc.) in a coarse or unskilful manner.

To cover with a specious or deceitful exterior; to disguise; to conceal.

To flatter excessively or grossly.

To put on without taste; to deck gaudily.

To mark spots on a bingo card, using a dauber.

Source: wiktionary.org