Dual. Like meaning 2, as in a dual-headset.
The homophone for duel is dual.
duel
duel
The answer is that there is no homophone for can, but can is a homonym.
Your is a homophone of you're. In some dialects, yore is another homophone.
the homophone for stationery is stationary
The homophone is dense.
The homophone is cell.
Hour is a homophone for Our
stock homophone
what is the homophone of space
The homophone is style