Definitions of chilly:

• noun:   very hot and finely tapering pepper of special pungency
• adjective:   lacking warmth of feeling

  Example: "A chilly greeting"

• adjective:   not characterized by emotion

  Example: "A female form in marble--a chilly but ideal medium for depicting abstract virtues-C.W.Cunningham"

• adjective:   uncomfortably cool

  Example: "Chilly weather"