weal1
 
/
wiːl/
n.
 a red, swollen mark left on flesh by a blow or pressure. 
▸Medicine  a temporarily raised and reddened area of skin, usually accompanied by itching.
v.
 mark with a weal.
Etymology
C19: var. of wale, influenced by obs. wheal ‘suppurate’.
weal2
 
/
wiːl/
n.
 formal that which is best for someone or something:
 guardians of the public weal.
Etymology
OE wela ‘wealth, well-being’, of W. Gmc origin; rel. to well1.