橡皮圈

[ noun ]
a narrow band of elastic rubber used to hold things (such as papers) together
<noun.artifact>

rubber band \rub"ber band"\, n.
A closed loop of rubber usually having a thin rectangular
cross-section; also called {elastic band}; -- it varies in
length from the circumference of a finger to several inches,
and is usually used to hold several objects together
temporarily, by the tension exerted when the band is
stretched and fitted around the objects to be held; as, to
hold a pack of cards together with a {rubber band}.
[PJC]