What's "the word I'm thinking of"? Today, it's...
SOMNICULOUS [som-NIC-yoo-luss] (adjective)
Sleepy or drowsy
"She soon went to sleep, but dreamt of distresses and vexations, of exertions demanded, and powers not to be excited; of falling from precipices, of painful adieus, and of boats foundering in shoreless waters, and was haunted by all the train of somniculous misery, which the superstitious resolve into causes, and the less weak into effects."
--Laetitia Matilda Hawkins, The Countess and Gertrude (1812) (TWITO, page 139)

