Real Dictionary

romance
countable noun: A romance is a novel or film about a love affair.
countable noun: A romance is a relationship between two people who are in love with each other but who are not married to each other.
uncountable noun: Romance is used to refer to novels about love affairs.
uncountable noun: Romance refers to the actions and feelings of people who are in love, especially behaviour which is very caring or affectionate.
uncountable noun: You can refer to the pleasure and excitement of doing something new or exciting as romance.

Romance in American English
a long medieval narrative in verse or prose, orig. written in one of the Romance dialects, about the adventures of knights and other chivalric heroes
designating, of, or constituting any of the languages derived from Vulgar Latin, as Italian, Spanish, French, or Romanian
these languages as a group
to make love to; woo
to make up false or exaggerated stories

romance in American English 1
noun: a novel or other prose narrative depicting heroic or marvelous deeds, pageantry, romantic exploits, etc., usually in a historical or imaginary setting

romance in American English 2
noun: a short, simple melody, vocal or instrumental, of tender character

romance in British English
adjective: denoting, relating to, or belonging to the languages derived from Latin, including Italian, Spanish, Portuguese, French, and Romanian
noun: a love affair, esp an intense and happy but short-lived affair
noun: this group of languages; the living languages that belong to the Italic branch of the Indo-European family
verb: to tell, invent, or write extravagant or romantic fictions