Do you really want to send Webster 1913 a message saying you like their work?
Op`o*bal"sam (?), Op`o*bal"sa*mum (?), n. [L. opobalsamum, Gr. ; vegetable juice + balsam.] Med.
The old name of the aromatic resinous juice of the Balsamodendron opobalsamum, now commonly called balm of Gilead. See under Balm.
© Webster 1913.