What “Bashment” means
A bashment is a big party or dance. It can also be used as an adjective for anything flashy or showy.
Examples
Wi a go a di bashment
We're going to the party
Di bashment did ram jam
The party was packed.
How to use it
Casual and closely tied to dancehall culture.
Where usage varies
In the UK, "bashment" is also widely used as a name for dancehall music itself.