gyahinik

/ɡjaxinik/

Cases

FormWhen to use it
nominativegyahinikthe first grassthe plain dictionary form — the doer of the sentence
genitivegyahiniknithe first grass'the owner — whose it is
accusativegyahiniknithe first grass (as the object)a specific, known object — whom or what
dativegyahinikgeto the first grassdirection or recipient — to where, to whom
locativegyahinikdeat / in the first grasswhere it is; also having — mende bar, "I have it"
ablativegyahinikdenfrom the first grasswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
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

Owned
mygyahinigimmy first grass
yourgyahinigingyour first grass
his / hergyahinigihis / her first grass
ourgyahinigibizour first grass
you all'sgyahinigigizyou all's first grass
theirgyahinikleritheir first grass

There is no plural of this word. The ending would attach like any other — it is the word, not the grammar, that refuses: this is not something Karachay counts.