1. Wood for fuel.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• fairwood,
• firewords,
• firwood,
• forwood,
• firewoods,
• firewoood,
• harewood,
• firewweed,
• firedwood,
• firewooed,
• firewoode,
• firewod,
• firewoo,
• fierwood,
• firewoodd,
• frutwood,
• virooid,
• Birwood,
• firepott,
• firewoodz

• foreword,
• fireweed,
• fired,
• fiord,
• fiorito.

The adjective form of "firewood" is "firewood". It remains the same in both noun and adjective form.

The plural of the "firewood" can be the "firewoods".

The singular of the "firewood" can be the "firewood".