Tobacco rolled and wrapped with an outer covering of tobacco leaves, intended to be smoked.
"He placed a thick cigar in his mouth, ready to enjoy its smoky flavor after dinner."
In plain English: A cigar is a thick, rolled cigarette made from dried tobacco leaves that people smoke for pleasure.
"He enjoyed smoking his favorite cigar on the porch after dinner."
Usage: A cigar consists of whole tobacco leaf wrappers rather than the shredded filler found in cigarettes or pipe tobacco. Use this term specifically when referring to large cigars meant for slow smoking over several minutes.
The word comes from the Spanish cigarro, though its ultimate origins are unknown. More details about its uncertain history can be found in the entry for that Spanish term.