D / dĭlemma
noun

dĭlemma

gen. dĭlemmătis · gender neuter · decl. 3rd
a double proposition, a dilemma;; an argument in which an adversary is pinned between two difficulties
a double proposition, a dilemma; in logic, an argument in which an adversary is pinned between two difficulties, Serv. Verg. A. 2, 675, and 10, 449.