n. (also ha'p'orth) 1 as much as could be bought for a halfpenny. 2 colloq. a negligible amount (esp. after neg.: doesn't make a halfpennyworth of difference).
HALFPENNYWORTH
Meaning of HALFPENNYWORTH in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012