The smile broadened, including the dimple.
His smile broadened until the dimple appeared.
Her smile broadened into a grin as she reached for the cat.
He was a man of mild and liberal spirit, broadened by varied culture, constitutionally averse from narrow views and enforced uniformity.
When the plate vibrated the mirror was vibrated about the fixed edge, and the image of a reflected slit was broadened out into a band, the broadening giving the amplitude of vibration of the plate.
