Meta description
A meta description is the one or two lines of grey text under your page title in search results.
In a simple example
Under the name of your bakery, search shows: Fresh cakes in Kuwait City. Order online for same day pickup.
Why it matters to you
People read it to decide whether to click, so a clear line brings more visits.
Do not confuse with
It is not shown on the page itself. Only search results and shares use it.