guillotine: instrument of execution that consists of a weighted blade between two vertical poles; used for beheading people
physical entity: an entity that has physical existence
monocotyledones: comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae