(pathology) A very common, mild viral infection of the nose and throat, whose symptoms include sneezing, sniffling, a running or blocked nose, a sore throat, coughing and a headache.

(idiomatic) In a ruthless and unfeeling manner, particularly as applied to first-degree murder committed without provocation and with malice aforethought.

Having an unregulated body temperature; ectothermic. / Lacking emotion or compunction.

(pathology) A small bump (namely a vesicle) on the lips resulting from infection by herpes simplex viruses (mostly HHV1 but also HHV2).

As cold as ice; very cold. / Without emotion; distant.

(idiomatic) Very cold; lacking any semblance of warmth. / (idiomatic) Certain; definite; obvious.

(of a vacuum tube or fluorescent lamp) not heated by a filament

(meteorology) The leading edge of an advancing mass of cold air.

(idiomatic) extremely and unpleasantly cold

(idiomatic) extreme and unpleasant cold