Appear, missing the first bloom (4)

I believe the answer is:

loom

I'm a little stuck... Click here to teach me more about this clue!

'appear' is the definition.
(I know that loom is a type of rise)

'missing the first bloom' is the wordplay.
'LOOM' is hidden within the letters.
But, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for loom that I've seen before include "Bulk large" , "tower" , "Apparatus for weaving yarn" , "Weaving frame - seem ominously close" , "textile manufacturer" .)

I've seen this clue in The Mirror.

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