Most meteors you can see are the size of a single grain of sand or smaller. Anything baseball sized or larger is a major event.
A meteoroid (/ˈmiːtiərɔɪd/ MEE-tee-ə-royd)[1] is a small rocky or metallic body in outer space. Meteoroids are distinguished as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide.
(Rubin, Alan E.; Grossman, Jeffrey N. (January 2010). "Meteorite and meteoroid: New comprehensive definitions". Meteoritics & Planetary Science. )