stock option is a noun meaning "the right to buy or sell a stock at a specified price within a stated period". It carries 2 recorded senses.
the right to buy or sell a stock at a specified price within a stated period
a benefit given by a company to an employee in the form of an option to buy stock in the company at a discount or at a fixed price
“stock options are not much use as an incentive if the price at which they can be exercised is out of reach”
Definitions, synonyms and semantic relations for stock option come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.