Owns gallery like a spear (7)

I believe the answer is:

hastate

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'like a spear' is the definition.
I can't judge whether this definition defines the answer.

'owns gallery' is the wordplay.
'owns' becomes 'has' ('have' can be a synonym of 'own').
'gallery' becomes 'tate' (Tate Modern, Tate Britain etc).
'has'+'tate'='HASTATE'

Can you help me to learn more?

(Another definition for hastate that I've seen is " spear-shaped".)

I've seen this clue in the Sydney Morning Herald.

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