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Hmm got it now , so they use wedge for shape here, we have potato wedges - and they are named as wedge for the shape in which they are served.

We have potato wedges but the are wedge shaped chunks of potatoes.

You said yours were chips....are chips like a very thin crisp type of chip or are they thicker like a french fry??

Oh I used the incorrect word here. I could not figure out a substitute for wedge, but they are wedges only. I still cannot think of a substitute for wedge potato wedge

You used the correct word. Perfect!