To dye woolen fibers before they are spun into thread.

A Chinese dynasty that lasted from 960–1279 C.E..

(historical) A long, narrow hollow dug from the ground to serve as a boundary marker. / A long, narrow hollow dug from the ground to conduct water. / (dialect) Any navigable watercourse.

(transitive or intransitive) To dig, particularly to create a ditch. / (transitive) To surround with a ditch, to entrench. / (transitive, Scotland) To surround with a low dirt or stone wall.

(slang, usually derogatory, offensive) A lesbian, particularly one with masculine or butch traits or behavior. / (slang, usually derogatory, loosely, offensive) A non-heterosexual woman.

(mathematics, physics) A system which is time-dependent.

dynamical system

A Chinese dynasty that lasted from 618–907 C.E..

(Hinduism) In the Vedic religion, the Sky Father, husband of Prithvi and father of Agni and Indra.

The last dynasty of China, lasting from 1644 to 1912 C.E..