Chill meaning : A moderate, but uncomfortable and penetrating coldness. A sudden penetrating sense of cold, especially one that causes a brief trembling nerve response through the body; the trembling response itself; often associated with illness: fevers and chills, or susceptibility to illness. An uncomfortable and numbing sense of fear, dread, anxiety, or alarm, often one that is sudden and usually accompanied by a trembling nerve response resembling the body's response to biting cold. An iron mould or portion of a mould, serving to cool rapidly, and so to harden, the surface of molten iron brought in contact with it. The hardened part of a casting, such as the tread of a carriage wheel. A lack of warmth and cordiality; unfriendliness. Calmness; equanimity. A sense of style; trendiness; savoir faire. To lower the temperature of something; to cool To become cold To harden a metal surface by sudden cooling To become hard by rapid cooling To relax, lie back To "hang", hang out; to spend time with another person or group. Also chill out. To smoke marijuana To discourage, depress Moderately cold or chilly. Unwelcoming; not cordial. Calm, relaxed, easygoing. "Cool"; meeting a certain hip standard or garnering the approval of a certain peer group. Okay, not a problem.