of or at a low or relatively low temperature, especially when compared with the human body

a freezing cold day

it's cold outside

a sharp, cold wind

lacking affection or warmth of feeling; unemotional

how cold and calculating he was

cold black eyes

(of a colour) containing pale blue or grey

(of the scent or trail of a hunted person or animal) no longer fresh and easy to follow

the trail went cold

without preparation or rehearsal

they went into the test cold