Definition of sicking:
(adv) :
Thus; as written; used to indicate, for example, that text is being quoted as it is from the source.
(adv) :
(by extension) Used in the manner of scare quotes
(v) :
(transitive) To set upon; to chase; to attack.
(v) :
(transitive) To incite an attack by, especially a dog or dogs.
(v) :
To mark with a bracketed sic.
(n) :
Initialism of second-in-command. [Somebody ranking next below a commander.]