marshmallow
noun
marsh·mal·low
| \ ˈmärsh-ˌme-lō
, -ˌma-\
, -ˌma-\
Definition of marshmallow
1
usually marsh mallow
: a pink-flowered European perennial herb (Althaea officinalis) of the mallow family that is naturalized in the eastern U.S. and has flowers, leaves, and roots used in herbal remedies
2
: a sweet white confection usually in the form of a spread or small spongy cylindrical pieces now usually made from corn syrup, sugar, albumen, and gelatin but formerly from the marshmallow's root
also
: one of these spongy pieces
toasted marshmallows on sticks over a campfire