decollation noun3 •The act of beheading someone.She was borne Jan. 29ᵗʰ, morning, scil. the day before the anniversary-day of the king's [Charles I of England] decollation. — 1669 •The festival of the Baptist, celebrated on 29 August. •A picture of a decapitation, especially of the head of St John the Baptist on a charger. formsdecollations
