One engaged in a commercial pursuit. A commercial pursuit is one in which the thing pursued is a dollar.
Ambrose BierceCLOCK, n. A machine of great moral value to man, allaying his concern for the future by reminding him what a lot of time remains to him.
Ambrose BierceExperience - the wisdom that enables us to recognise in an undesirable old acquaintance the folly that we have already embraced.
Ambrose Bierce