'Ring shaped' in the Bible

" 'But if you bring a grain offering of something oven-baked, [it must be of] finely milled flour [as] ring-shaped unleavened bread [mixed] with oil or wafers of unleavened bread smeared with oil.

If he presents it for thanksgiving, in addition to the thanksgiving sacrifice he shall present ring-shaped unleavened bread mixed with oil and unleavened bread wafers smeared with oil and well-mixed ring-shaped bread cakes of finely milled flour mixed with oil.

In addition to ring-shaped cakes of bread [with] yeast, he must present his [grain] offering together with his sacrifice of thanksgiving peace offerings.

and from the basket of the unleavened bread that [was] before Yahweh he took one ring-shaped unleavened bread and one ring-shaped bread with oil and one wafer, and he placed [them] on the {fat parts} and on the right upper thigh.

"And you shall take finely milled flour, and you shall bake [with] it twelve ring-shaped bread cakes: each one [shall be] two-tenths [of an ephah].