Wiktionary
vb. To add or wrap an elastic around something.
Usage examples of "elasticate".
Marks and Spencer had completely run out of beige car coats with elasticated backs.
As I strolled along I watched an elasticated black kid, Felix's age or maybe older, gangle past with his pretty little friend.
Beverley opened the door wearing burgundy mock velvet pyjamas with white elasticated cuffs at wrist and ankle.
Norman had smoked barely half his Bay Gold, not enough to elasticate time for him, but because he had trespassed to the edge of the subject above all others where people like himself preferred not to be too open, he could not continue, a fact of which Donald was well aware.
The clothes were dull: T-shirts, jackets and trousers made of golden-brown Beta-cloth - selected because it was fireproof - with 1970s-style turtle necks and elasticated cuffs.
There was a series of rustlings and elasticated twangings, and then she turned around, holding a bag.