province of Pakistan, in the lower Indus River valley: 54,407 sq mi (140,914 sq km); pop. 19,029,000; cap. Karachi
See Sind in American Heritage Dictionary 4
A historical region of southern Pakistan along the lower Indus River. Inhabited since prehistoric times, it was held by Muslim dynasties from the 11th century until 1843, when it was annexed to British India. Sind became part of Pakistan in 1947.