Final answer:
The aural warning "Engine Oil" with the EICAS message "ENG OIL PRESS" indicates low engine oil pressure, which is a critical condition that requires immediate attention.
Step-by-step explanation:
When the aural warning "Engine Oil" is heard in conjunction with the EICAS (Engine Indicating and Crew Alerting System) message "ENG OIL PRESS," it indicates an anomaly with the aircraft's engine oil pressure. Specifically, this message signals low oil pressure, which is a condition that requires immediate attention to prevent potential engine damage. Contrary to signaling normal operation or high oil pressure, a low oil pressure warning suggests that the lubrication of the engine might be inadequate.