curves (part of speech: noun)
- If unilateral, it should suggest, in the case of children, the presence of a foreign body; in adults, the possibility of suppuration in one or more of the accessory sinuses. - "Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition.", Alexander Miles Alexis Thomson.
- Basal sinuses: The two sinuses toward the base of the blade. - "Manual of American Grape-Growing", U. P. Hedrick.
- Leaves large, thick; upper surface dark green, dull, rugose; lower surface pale green, cobwebby; lobes three to five with terminus acute; petiolar sinus intermediate in depth and width; basal and lateral sinuses deep and wide; teeth deep. - "Manual of American Grape-Growing", U. P. Hedrick.