What does <:3)~~~~ stand for?

<:3)~~~~ stands for "Mouse"

How to abbreviate "Mouse"?

"Mouse" can be abbreviated as <:3)~~~~

What is the meaning of <:3)~~~~ abbreviation?

The meaning of <:3)~~~~ abbreviation is "Mouse"

What does <:3)~~~~ mean?

<:3)~~~~ as abbreviation means "Mouse"