To yell out; to vocalize audibly; announce.
To contact one's workplace and announce that one is unable to attend work. Regionalism short for call out sick; much more commonly: call in sick.
To challenge, criticize, denounce.
To specify, especially in detail.
To order into service; to summon into service.
To cry louder than.
To cry out.
A loud cry or uproar.
A strong protest.