
1) Arabian Sea port 2) Capital city on Arabian Sea 3) Capital of Pakistan 4) City 5) City on the Arabian Sea 6) Largest city in Pakistan 7) Metropolis 8) City in Pakistan 9) Port in Pakistan 10) Slang for heroin 11) Urban center 12) Urdu is spoken here
Found on
https://www.crosswordclues.com/clue/karachi

Karachi is ranked as a beta world city. It was the capital of Pakistan until Islamabad was constructed as a capital to spread development evenly across the country and to prevent it from being concentrated in Karachi. Karachi is the location of the Port of Karachi and Port Bin Qasim, two of the region`s largest and busiest ports. After the indepe....
Found on
http://en.wikipedia.org/wiki/Karachi

Karachi is slang for heroin.
Found on
http://www.probertencyclopaedia.com/browse/ZK.HTM

[
n] - the largest city in Pakistan
Found on
http://www.webdictionary.co.uk/definition.php?query=Karachi

Largest city and chief port of Pakistan, lying on the Arabian Sea, northwest of the Indus delta; population (1998) 9,339,000, (2007 calc) 12,315,800. It is the capital of Sind province, and Pakistan's leading centre for commerce, finance, industry, and transport. Its port handles most of the ...
Found on
https://www.encyclo.co.uk/local/21221

a seaport in S Pakistan, near the Indus delta: former national capital; now capital of Sind province. 5,103,000.
Found on
https://www.infoplease.com/dictionary/karachi
No exact match found.