Meaning
Two senses. Literally having a large head. Figuratively, stubborn and self-willed — a 'big-head' child won't do as told and insists on their own way, close to 'hard-ears' and 'hard-head'. It can also carry a hint of conceit, of someone too proud to take advice. 'Big-head pickney nyam rockstone' warns that the stubborn suffer for it.
Examples
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Yuh too big-head, yuh nuh tek no advice.
You're too stubborn; you take no advice.
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Di big-head bwoy do it him own way an fail.
The stubborn boy did it his own way and failed.
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Big-head pickney nyam rockstone.
The stubborn child suffers the consequences.
Origin
From 'big' + 'head'; literal, and figuratively stubborn/self-willed. See [[hard-head]], [[hard-ears]].
How it’s used
Stubborn/self-willed (also literally big-headed, or conceited). See [[hard-head]], [[hard-ears]].