to make quiet or put at rest; to pacify or appease; to quell; to calm; as, to allay popular excitement; to allay the tumult of the passions.-to alleviate; to abate; to mitigate; as, to allay the severity of affliction or the bitterness of adversity.-to diminish in strength; to abate; to subside.-alleviation; abatement; check.-alloy.-to mix (metals); to mix with a baser metal; to alloy; to deteriorate.