What does :< stand for?

:< stands for "Very Sad Smiley."

How to abbreviate "Very Sad Smiley."?

"Very Sad Smiley." can be abbreviated as :<

What is the meaning of :< abbreviation?

The meaning of :< abbreviation is "Very Sad Smiley."

What does :< mean?

:< as abbreviation means "Very Sad Smiley."