Glomp

A glomp is the slang term for what's best described as a "tackle-hug". In some communities it is also known as a glomph. Somewhat popular in the fandom among friends, especially smaller people in relation to stronger people, the glomper will run toward the glompee and jump right onto his or her body, wrapping his or her limbs around the person they have glomped, holding on in an affectionate cling.

A glomp can also be an affectionate nibbling around the neck, or even fastening one's mouth violently around the glompee, although those definitions are less common. Make sure the person you glomp knows that you're going to tackle them before you attempt it!