mes

/mes/

Cases

SingularPluralWhen to use it
nominativemesthe leather bootmeslethe leather bootsthe plain dictionary form — the doer of the sentence
genitivemesnithe leather boot'smeslenithe leather boots'the owner — whose it is
accusativemesnithe leather boot (as the object)meslenithe leather boots (as the object)a specific, known object — whom or what
dativemesgeto the leather bootmeslegeto the leather bootsdirection or recipient — to where, to whom
locativemesdeat / in the leather bootmesledeat / in the leather bootswhere it is; also having — mende bar, "I have it"
ablativemesdenfrom the leather bootmesledenfrom the leather bootswhere 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

One ownedSeveral owned
mymesimmy leather bootmeslerimmy leather boots
yourmesingyour leather bootmesleringyour leather boots
his / hermesihis / her leather bootmeslerihis / her leather boots
ourmesibizour leather bootmesleribizour leather boots
you all'smesigizyou all's leather bootmeslerigizyou all's leather boots
theirmesleritheir leather bootmesleritheir leather boots

The overlap in the last rows is real, not a mistake: mesleri can mean "his / her leather boots", "their leather boot", or "their leather boots" — context decides.