MARSHMALLOW
marshmallow
(noun) spongy confection made of gelatin and sugar and corn syrup and dusted with powdered sugar
Source: WordNet® 3.1
Etymology
Noun
marshmallow (plural marshmallows)
A species of mallow, Althaea officinalis, that grows in marshy terrain. [from 9th c.]
A type of confectionery, originally (since Ancient Egyptian times) made from this plant, but now generally made of sugar or corn syrup, gelatin that has been pre-softened in water, gum arabic, flavorings, and sometimes beaten egg whites, all whipped to a spongy consistency. [from 19th c.]
• Love, Life and Work
• PH Wodehouse, A Wodehouse Miscellany
(figuratively) Someone who is soft and benign.
Source: Wiktionary