MEANING: noun:
1. A naive and inept trainee or worker.
2. An undesirable hospital patient, one who may be unpleasant, senile, or unresponsive to treatment.
3. A conical chamber used in guns and mortars.

ETYMOLOGY: For 1: Of unconfirmed origin, but likely after Gomer Pyle, a character in the television series The Andy Griffith Show, later in his own spin-off show Gomer Pyle, USMC, broadcast in the 1960s. Earliest documented use: 1967.

For 2: Most likely from the same origin as sense 1. It has been suggested that it’s an acronym for “Get Out of My Emergency Room”, but that may be a backronym (an acronym coined to explain a word that’s not actually an acronym). Earliest documented use: 1972.

For 3: After Louis-Gabriel de Gomer (1718-1798), French military officer who invented it. Earliest documented use: 1828.

GNOMER - a hunter who specializes in small unpleasant garden critters

DOMER - circumlocution for "egghead" (an intellectual out of touch with the Real World)

GLOMER - a Scotsman who goes roamin' in the evening hours around sunset