1(A nickname for) an energetic or exciting jazz trumpeter.
2(Frequently humorous) the lips of a person who kisses passionately; (a nickname for) an attractive or sexy person; one who is or is believed to be a passionate kisser.
Origin
1920s.
Definition of Hot Lips in US English:
Hot Lips
noun
slang
1(A nickname for) an energetic or exciting jazz trumpeter.
2(Frequently humorous) the lips of a person who kisses passionately; (a nickname for) an attractive or sexy person; one who is or is believed to be a passionate kisser.