What does Oxford mean?
A plain weave fabric where 2 or more filling yarns pass over and under 1 or more parallel warp yarns. It is possible to have 2×1, 2×2, 3×2, 4×4, or 8×8.
Heddels explains Oxford
Oxford cloth has a basketweave pattern and is most commonly used for dress shirts. While traditionally made of cotton, today’s oxford cloth is also frequently made of a synthetic blend.
It is a sturdy, comfortable fabric and is relatively inexpensive to manufacture.
Up-close snapshot of oxford cloth: