lentigo

noun

len·​ti·​go len-ˈtī-(ˌ)gō  -ˈtē- 

plural lentigines len-ˈtij-ə-ˌnēz 

1

: a small melanotic spot in the skin in which the formation of pigment is unrelated to exposure to sunlight and which is potentially malignant

especially : nevus compare freckle

2

: freckle