名詞 wheal:

1. a raised mark on the skin (as produced by the blow of a whip); characteristic of many allergic reactions
   同義詞：wale, welt, weal

wheal

n.（名詞）
A small swelling on the skin, as from an insect bite, that usually itches or burns.
疹塊：皮膚上的小隆起腫塊兒，如被蟲咬過后，常瘙癢或伴隨有灼傷感

來源：
Probably alteration of wale
可能為 wale的變化