Pain, shame, ire, impatience, disgust, detestation, seemed momentarily to hold a quivering conflict in the large pupil dilating under his ebon eyebrow.
His voice and hand quivered: his large nostrils dilated; his eye blazed: still I dared to speak.
Often, of an evening, when he sat at the window, his desk and papers before him, he would cease reading or writing, rest his chin on his hand, and deliver himself up to I know not what course of thought; but that it was perturbed and exciting might be seen in the frequent flash and changeful dilation of his eye.
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Her pupils were dilated.
Pupils dilate when someone looks at something they like.