Definition of quarterlies:
(adj) :
Occurring once every quarter year (three months); taking place quarter-yearly.
(adv) :
Once every quarter year (three months).
(n) :
A periodical publication that appears four times per year.
(adj) :
(heraldry) (of a coat of arms) Divided into four parts crosswise.
(adv) :
(heraldry) In the four, or in two diagonally opposite, quarters of a shield.