Meltdown, start taunting worker? Queer! (7)

I believe the answer is:

tantrum

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'meltdown' is the definition.
I can't judge whether this defines the answer.

'start taunting worker? queer' is the wordplay.
'start' indicates taking the first letters.
'worker?' becomes 'ant' (worker is a type of ant).
'queer' becomes 'rum' (synonyms).
The first letter of 'taunting' is 't'.
't'+'ant'+'rum'='TANTRUM'

Can you help me to learn more?

(Other definitions for tantrum that I've seen before include "Burst of rage" , "petulant outburst" , "fit of bad temper" , "Fit - pet" , "Uncontrolled outburst of anger" .)

I've seen this clue in The Hindu.

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