To be reduced in quantity through attrition.
To lose, or to kill, troops by attrition due to sustained firepower.
To engage in attrition; to quit or drop out.
To wear down through attrition, especially mechanical attrition.
One who voluntarily or involuntarily leaves a company; a termed employee.
To lower the setting of.
To become less aggressive, particularly when one had appeared committed to act.
To move backwards away from something.
You need to back off, or the situation could turn ugly.
Used other than figuratively or idiomatically: see back, off.