Meaning
This — the Patois pronunciation of 'this', with the 'th' hardened to 'd'. 'Dis one yah' means this one here, and 'dis ya place' is this place. Note that 'dis' is also a quite separate slang verb meaning to disrespect (short for 'disrespect'), so that 'him dis mi' means he disrespected me, and only context tells the two apart. As the demonstrative, 'dis' is among the most common everyday words, doing the plain work of pointing out the near and particular thing at hand.
Examples
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Dis one yah sweeter dan dat.
This one here is sweeter than that.
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Mi like dis place.
I like this place.
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Wah dis?
What's this?
Origin
The Patois pronunciation of 'this' — 'th' hardened to 'd'. The 'disrespect' verb sense is a separate modern clipping of 'disrespect'.
How it’s used
Means 'this'; beware the separate slang 'dis' = to disrespect. See [[dat]], [[wid]].