means The act of inhaling and exhaling the smoke of burning tobacco, or the emission of smoke from something burning.

from From Old English 'smoca,' the noun for the grey breath of a fire, tied to a Germanic root for smoke that shows up in cousins like Dutch 'smook' and German 'Schmauch.' The verb sense of drawing tobacco fumes into the lungs arrived only after tobacco itself crossed the Atlantic in the 1500s — at which point an ancient word for hearth-smoke quietly took on a new, lung-shaped meaning.