The Omnificent English Dictionary in Limerick Form (or OEDILF) has published more than 97,000 definitions written in the singsong poetry of a five-line limerick. Here are some examples selected from the website.

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ABSTRACT

When my paint bottles spilled, how I swore!

They spread red, blue and yellow; what's more,

Purple, orange and green

Then appeared in the scene

As an abstract was formed on the floor.

—by art bates

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AEQUEOSALINOCALCALINOCERACEOALUMINOSOCUPREOVITRIOLIC

The waters where babies should frolic

Whenever they're subject to cholic

Are aequeosalino-

calcalinoceraceo-

aluminosocup...