Call about a primitive painting (4)

I believe the answer is:

daub

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'primitive painting' is the definition.
'daub' can be an answer for 'painting' (daub is a kind of painting). I am not certain of the 'primitive' bit.

'call about a' is the wordplay.
'call' becomes 'dub' (both can mean to name).
'about' indicates putting letters inside.
'dub' enclosing 'a' is 'DAUB'.

Can you help me to learn more?

(Other definitions for daub that I've seen before include "Smear; bad painting" , "Smear roughly or paint clumsily" , "Crude painting" , "Smear carelessly" , "Carelessly spread (paint)" .)

I've seen this clue in The Daily Express.

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