Kotka •balalaika, biker, duiker, Formica, hiker, mica, pica, pika, piker, striker •blocker, chocker, docker, Fokker, interlocker, knocker, locker, mocha, mocker, ocker, quokka, rocker, saltimbocca, shocker, soccer, stocker •vodka • polka •concha, conker, conquer, Dzongkha, plonker, stonker •Oscar • Kotka • Knickerbocker •footlocker •caulker (US calker), corker, hawker, Lorca, Majorca, Minorca, orca, porker, squawker, stalker, talker, walker, yorker •deerstalker • jaywalker • sleepwalker •streetwalker • hillwalker •shopwalker •Asoka, broker, carioca, choker, coca, croaker, evoker, invoker, joker, mediocre, ochre (US ocher), poker, provoker, revoker, Rioja, smoker, soaker, soca, Stoker, tapioca •judoka • shipbroker • stockbroker •pawnbroker • troika

Kotka (kōt´kä), city (1998 pop. 55,551), Southern Finland prov., SE Finland, on the Gulf of Finland. It is a major export center for paper, pulp, and timber, and it has chemical industries. It was chartered in 1878.