Besmoke is a verb that means to cover or fill with smoke. It is a relatively obscure word that is not used very often in everyday conversation. However, there are several synonyms for besmoke that are more commonly used and familiar. These include words such as smoke, fume, haze, and smog. Each of these words is used to describe the presence of smoke or the act of producing smoke. They can be used interchangeably with besmoke, depending on the context and intended meaning of the sentence.