Sindhu River / Indus River / सिन्धु नदी
The name Indus is a Latinization of Hindu, in turn the Iranian variant of Sindhu, the name of the Indus in the Rigveda. The Sanskrit Sindhu generically means "river, stream, ocean", probably from a root sidh "to keep off"; Sindhu is attested 176 times in the Rigveda, 95 times in the plural, more often used in the generic meaning.
Indus River is the longest river in Pakistan and the third largest river, in terms of annual flow in the region. It is often considered the life-line of Pakistan by the people of that country. The Europeans used the name "India" for the entire subcontinent based on "Indo", the Greek the appellation of this river. Originating in the Tibetan plateau in the vicinity of Lake Mansarovar, the river runs a course through Ladakh district of Jammu and Kashmir and Northern Areas(Gilgit-Baltistan), flowing through the North in a southerly direction along the entire length of the country, to merge into the Arabian Sea near Pakistan's port city Karachi.