(nautical) A downhaul located at the tack of a sail, used for tightening the luff.

comparative form of cunning: more cunning

(historical) professional or semi-professional practitioners of magic (who were often charlatans) who were active from at least the 15th up until the early 20th century.

plural of cunningman

(obsolete) A fortuneteller; one who pretends to reveal mysteries.

plural of cunning woman

(historical) A witch or sorceress.

(historical) A wise man or wizard; a magician.

plural of Cunningham chain

A Cunningham chain of the first kind of length n is a sequence of prime numbers (p₁, ..., pₙ) such that for all 1 ≤ i < n, pᵢ₊₁ = 2pᵢ + 1.