cold as... adj.
see also under colder than... adj.
[1920s+] (US/Aus.) of temperature, extremely cold; also in fig. use.
[1950s+] (US) of temperature, extremely cold.
1. [mid-late 19C] (US) of temperature, very cold.
2. [1920s+] (Aus./US, also cold as a grandmother’s/mother-in-law’s kiss) used fig. of a person’s emotions, very cold.
[1960s+] extremely cold, or sexually frigid.
1. [1950s+] (also frigid as a witch’s tit) extremely cold, temperature wise.
2. [1950s+] completely without emotions.
see under Kelsey’s nuts n.