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Some Markdown parsers support definition lists

Parsers like goldmark (the default parser for Hugo) support definition lists.

Example syntax:

Apple
:   Pomaceous fruit of plants of the genus Malus in 
    the family Rosaceae.

Orange
:   The fruit of an evergreen tree of the genus Citrus.

which renders as:

Apple
Pomaceous fruit of plants of the genus Malus in the family Rosaceae.
Orange
The fruit of an evergreen tree of the genus Citrus.

This isn’t supported by Github flavoured Markdown yet.