pugekaili = charcoal (noun) (some things Google found for "pugekaili": an unique term; this is a compound Miresua word of puge (firewood) and kaili (carbon; coal))
Word derivation for "charcoal" :
Basque = egurrikatz (egur = firewood + ikatz = coal,charcoal)
Finnish = puuhiili (puu = wood + hiili = carbon,coal)
Miresua = pugekaili
The first word of this Miresua compound word, which means firewood, is singular instead of plural. In other words, puge instead of the plural, puget.