Glom (verb)

1. To grab or take something quickly or surreptitiously.
2. To take possession or control of something, often without right or permission.

Origin:

Early 20th century: origin uncertain, perhaps from scottish and northern english dialect glaum "seize, snatch".

Examples:

1. He glommed the last cookie from the plate.
2. She glommed onto the idea and made it her own.
3. He glommed onto her arm and refused to let go.
4. The thief glommed the woman's purse and ran off.
5. He glommed onto the opportunity and made the most of it.