Meaning of “wad” - Learner’s Dictionary

wad

noun [ C ] uk us /wɒd/
PILE

a thick pile of pieces of paper, especially paper money:

a wad of cash
BALL

a piece of soft material in the shape of a ball:

a wad of cotton wool UK / cotton US

(Definition of “wad” from the Cambridge Learner’s Dictionary © Cambridge University Press)