What is the meaning of Gomer?

Alternative form of omer: a former Hebrew unit of dry volume equal to about 2.3 L or 2.1 quarts.

A conical chamber at the breech of the bore in heavy ordnance, especially in mortars.

A stupid, awkward, or oafish person.

An inept trainee or serviceperson.

An opponent in combat or in training.

An undesirable hospital patient, or a patient who does not need medical care.

A dirty, senile, or otherwise unpleasant patient.

A patient who does not respond to medical treatment.

Source: wiktionary.org