I've been reading Eco and have a slew of new words:
peplos. A rich outer shawl or robe worn by women in ancient Greece. "But Gemmy, like every cartoon heroine, was dressed in a soft tunic, a sort of peplos that bared her shoulders and arms and part of her bosom."
callipygian. Having well-shaped buttocks. "Her gown clung damply to her body, clearly revealing her callipygian curves, and the entire shapely length of her legs."
oneiric. Of or related to dreams or dreaming. "For me, that album must have been, more than a material object, a receptacle of oneiric images." (I've come across this one before but couldn't remember what it meant)
plantigrade. Of a mammal walking on the soles of the feet like a human or a bear. "By this point, for both Ada and myself, our beloved plantigrade was a painful sight" (in reference to a stuffed bear).
alopecia. Partial or complete absence of hair from areas of the body where is usually grows, baldness. And impetigo. A contagious bacterial skin infection forming pustules and yellow, crusty sores. "Bruno, two cat eyes, pointy teeth, and mouse-gray hair with two bare spots, as if from alopecia or impetigo."
deuteragonist The person second in importance to the protagonist in a drama. "A deuteragonist in that little drama, I had a moment of doubt." (I'm sort of embarrassed for not knowing this literary term).
proglottidean From proglottid, each segment in the strobila of a tapeworm containing a complete, sexually mature reproductive system. "My memory is proglottidean, like the tapeworm, but unlike the tapeworm it has no head, it wanders in a maze, and any point may be the beginning or the end of its journey." (It's been a long time since high school biology)
The challenge again becomes how to use these words in every day conversation. I'm most likely to succeed with oneiric and callipygian I think. People are going to start asking me if I have one of those word-a-day calendars or something. No, nothing as banal and quotidian as that. Umberto Eco is better than word-a-day any day.