caul (en)

(noun) the large fatty omentum covering the intestines (as of a cow, sheep, or pig) / (noun) the inner fetal membrane of higher vertebrates especially when covering the head at birth

gossamer (en)

(noun) a film of cobwebs floating in air in calm clear weather / (noun) something light, delicate, or insubstantial / (adjective) extremely light, delicate, or tenuous

mistral (en)

(noun) a strong cold dry northerly wind of southern France / (biographical name) Frédéric 1830–1914 Provençal poet / (biographical name) Gabriela 1889–1957 originally Lucila Godoy Alcayaga Chilean poet & educ.

syncline (en)

(noun) a trough of stratified rock in which the beds dip toward each other from either side