Definition of attrits:
(v) :
To wear down through attrition, especially mechanical attrition.
(v) :
To be reduced in quantity through attrition.
(v) :
To engage in attrition; to quit or drop out.
(v) :
(military) To lose, or to kill, troops by attrition due to sustained firepower.
(n) :
(countable) One who voluntarily or involuntarily leaves a company; a termed employee.