hira, hirae, hirie noun, currency
1 a halfpenny 20-; historical.
2 a penny 20; historical. etymology: pre-decimalisation (1971) a coin worth an old half penny or penny; Romany hor, horry ‘a penny’; perhaps ultimately derived from Latin aurum ‘gold’; attested by Galloway and Perthshire and Argyleshire Tinkler-Gypsies note:

hiries is used in modern Edinburgh Scots to mean money in general. Its use was popularised by the Edinburgh author Irvine Welsh in his 1993 novel Trainspotting.

Smart & Crofton (1875) also collected the forms Hárri, hórro, haúro, kórro ‘a penny’ also haúro ‘copper’ from English Gypsies.