A.
I. (v.) (of weather) grelar.

it hails - grelas.

II. (n.) greluno.

hail of stones - stonogrelo.
protection against hail - paragrelo.
to devastate by hail - grelofrapar, grelagar.

B.
I. (v.) (acclaim) aklamar;

(call to) advokar;
hail from - venar de.

II. (interj.) saluto!