FOCO is also possible; but the singular would be unusual.
This silly charge was continually made, and gained color from the extreme doctrines of the Equal Rights movement and the fixing of the Loco-foco name upon the Democratic party.
The anti-monopolists, perhaps used to the devices to prevent meetings which might be hostile, were ready with candles and loco-foco matches.
The regulars were successful, however, at the election; and they and the Whigs dubbed the anti-monopolists the Loco-foco men.
The Whigs had, indeed, been glad enough to have Loco-foco aid and even open alliance at the polls.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "foco" in a variety of sentences. We hope that you will now be able to make sentences using this word.