What does it mean when there is an omnibus pre-trial motion filed in a homicide case ?

If you are the defendant you should ask your attorney what its about, No one here can give you a good answer based on the limited amount of information you have given. An Omnibus pretrial motion is what is filed for any and all pretrial motions whether it be for discovery, to suppression evidence, to get pre-trial rulings on evidence etc.

Your lawyer is there to help you and make sure you understand what is going on. Speak to your lawyer and tell them you are confused.

An omnibus pre-trial motion is a preliminary motion. The defense attorney preserves the right to litigate various motions before your trial. You need to talk to your lawyer about your case. He can better explain the purpose of the pre-trial omnibus as it pertains to your specific facts.

It is a form of a pretrial motion which can include a variety of pretrial requests, including, but not limited to, motion for discovery, motion to dismiss, motion in limine, etc. Generally, if an attorney is filing motions in criminal case, he is working for the defendant.