A combine harvester
We can't finish harvesting because our combine is stuck in the mud.
A combination
To bring (two or more things or activities) together; to unite.
Combine the milk and the hot water in a large bowl. I'm combining business and pleasure on this trip.
To have two or more things or properties that function together.
Joe combines the intelligence of a rock with the honesty of a politician.
To come together; to unite.
two substances that easily combine
In the game of casino, to play a card which will take two or more cards whose aggregate number of pips equals those of the card played.
To bind; to hold by a moral tie.