Is a retiree receiving deferred compensation eligible to deduct IRA contributions?

I am retired.  I receive deferred compensation from a former employer reported on a W-2.  As a non-working retiree, I can no longer contribute to my former employer's sponsored retirement plans.  Am I eligible to deduct Traditional IRA contributions without limitation?  Does “Covered by a Retirement Plan at Work" imply a taxpayer is still working, and not a retiree receiving the benefit of having been “Covered by a Retirement Plan at Work"?