kulak

/ qulaq /

Cases

SingularPluralWhen to use it
nominative kulak the ear kulakla the ears the plain dictionary form — the doer of the sentence
genitive kulaknı the ear's kulaklanı the ears' the owner — whose it is
accusative kulaknı the ear (as the object) kulaklanı the ears (as the object) a specific, known object — whom or what
dative kulakğa to the ear kulaklağa to the ears direction or recipient — to where, to whom
locative kulakda at / in the ear kulaklada at / in the ears where it is; also having — mende bar, "I have it"
ablative kulakdan from the ear kulakladan from the ears where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
my kulağım my ear kulaklarım my ears
your kulağıng your ear kulaklarıng your ears
his / her kulağı his / her ear kulakları his / her ears
our kulağıbız our ear kulaklarıbız our ears
you all's kulağığız you all's ear kulaklarığız you all's ears
their kulakları their ear kulakları their ears

The overlap in the last rows is real, not a mistake: kulakları can mean "his / her ears", "their ear", or "their ears" — context decides.