smegma
noun
smeg·ma ˈsmeg-mə 
: the secretion of a sebaceous gland
specifically : the cheesy sebaceous matter that collects between the glans penis and the foreskin or around the clitoris and labia minora
Word History
Etymology
New Latin, from Latin, detergent, soap, from Greek smēgma, from smēchein to wash off, clean
First Known Use
circa 1819, in the meaning defined above
Medical Definition
smegma
noun
smeg·ma ˈsmeg-mə
: the secretion of a sebaceous gland
specifically : the cheesy sebaceous matter that collects between the glans penis and the foreskin or around the clitoris and labia minora