Precipitation in the form of spherical or irregular pellets of ice larger than 5 millimeters (0.2 inches) in diameter. Something that falls with the force and quantity of a shower of ice and hard snow: a hail of pebbles; a hail of criticism. To precipitate in pellets of ice and hard snow. To fall like hailstones: Condemnations hailed down on them. To pour (something) down or forth: They hailed insults at me. To salute or greet. To greet or acclaim enthusiastically: The crowds hailed the boxing champion. To call out or yell in order to catch the attention of: hail a cabdriver. To signal or call to a passing ship as a greeting or identification. The act of greeting or acclaiming. A shout made to catch someone's attention or to greet. Hailing distance: told me to stay within hail. Used to express a greeting or tribute. hail from To come or originate from: She hails from Texas.