Definition of wheal

• n. - A pustule; a whelk.
• n. - A more or less elongated mark raised by a stroke; also, a similar mark made by any cause; a weal; a wale.
• n. - Specifically (Med.), a flat, burning or itching eminence on the skin, such as is produced by a mosquito bite, or in urticaria.
• n. - A mine.