Perfect meaning please!

[Amy]

Hello again,

I found it difficult to get a perfect meaning in the dictionaries for:

1)Thee
2)Thou
3)Thy

Please help me get a perfect one.

Thanks.
Amy

[Donbelid]

All of them are archaic words:

1) "thou" = you (subjective)
Example: Art thou my friend? (are you my friend?)

2) "thee" = you (objective)
Example: I sent thee late a rose wreath. (I sent you a rose wreath lately)

3) "thy" = your
Example: thy brother (your brother)

[Tdol]

With 'thine' as the other form.

[Amy]

By the way,when it is used?

[Tdol]

Normally as a possessive pronoun, like mine/yours.

[Amy]

Thanks tdol.
Actually I was asking whether it could be used in any conversations or in any formal writings?

[Tdol]

I wouldn't recommend it- it's archaic, so it would look or sound very strange indeed.