(n.) A group of three literary or musical works that have a related theme.
(v.) to divide into three parts
(n.) A group of three; especially in authority
(n.) A quarter of a circle or of its circumfrence. An early machine for measuring altitudes. Any of the four parts of an area divided by perpendicular lines.
(n.) A musical composition for four voices or instruments. a set of four, especially of four musicians
(n.) A stanza or group of four lines of poetry.
(v.) To destroy a large part of. To kill one in every ten
(n.) An athletic contest in which each contestant takes part in ten events
(n.) A two-hundredth anniversary. (adj.) Happening every 200 years
(adj.) Pertaining to a 100-year period. (n.) a centennial
(adj.) referring to a thermometer scale of 100 degrees where water freezes at 0 degrees and boils at 100 degrees