1 coal la19-.
2 fire 20.
3 firewood 20. Compare yagger, cadyuch etymology: sense 1 perhaps a development from Romany yog, yak ‘fire’; perhaps also Cant; yak form also collected by EMcC/PS and attested by Galloway and Perthshire and Argyleshire Tinkler-Gypsies; form yak collected by Simson (1865); forms yag and yog collected by Joseph F G S Lucas from Kirk Yetholm Gypsies, BS in TDITA and SS; form yog collected by RD note:
An older Romany word for coal is wonger or wongar ‘coal’ the word developed into another word for money, according to the Oxford English Dictionary because ‘The shift in meaning in British Romani may be due to a Romani practice of collecting coal fallen from passing trains for use as currency...’. Grellmann (1787) also collected the terms jangar, and angar with the same meaning from Continental gipsies perhaps wonga is a development from these much earlier words. However, cole is another Cant word for money and the OED’s first attestation is from 1673.
Smart & Crofton collected the form Yog ‘fire’ and also ángar, vóngar, wóngar ‘coal, coals’ from English Gypsies.