Defn: One who fights in single combat; a duelist.

MONOMANE
Mon"o*mane, n.

Defn: A monomaniac. [R.]

MONOMANIA
Mon`o*ma"ni*a, n. Etym: [Mono- + mania.]

Defn: Derangement of the mind in regard of a single subject only; also, such a concentration of interest upon one particular subject or train of ideas to show mental derangement.

Syn.
— Insanity; madness; alienation; aberration; derangement; mania.
See Insanity.

MONOMANIAC
Mon`oma"ni*ac, n.

Defn: A person affected by monomania.

MONOMANIAC; MONOMANIACAL
Mon`oma"ni*ac, Mon`oma"ni*a*cal, a. Etym: [Cf. F. monomaniaque.]

Defn: Affected with monomania, or partial derangement of intellect; caused by, or resulting from, monomania; as, a monomaniacal delusion.