That a misspelling for Bliadhna Mhath Ùr!Happy New Year! Pronounced as bleeuna vah oor.
My first guess would be that you are misspelling it and you mean Bliadhna mhath ùr, anagramming the first word and mixing up "mh" with "bh" in the second. "Bliadhna mhath ùr" means "Happy New Year."
Bliadhna Mhath Ùr! [BLEEana vah oor]
Nollaig Chridheil agus Bliadhna Mhath Ùr
The Scottish Gaelic for "Merry Christmas and happy new year"
In Scottish Gaelic Happy New Year is Bliadhna Mhath ÙrPronounced "bleeana vah oor"
oi-he vah
"Blyuh-na" is a close approximation of how "bliadhna" is pronounced. It's a Scottish Gaelic word that means "year".
Since you did not specify which Gaelic, here are two answersNollaig Chridheil is ScottishIrish would be Nollaig faoi shéan agus faoi shonas duit!
Sláinte = cheers (Irish); Slàinte (Scottish).
"matin vah" It means "Good morning" in Scottish Gaelic.
In Irish Gaelic:Athbhliain faoi shéan is faoi mhaise dhuit (singular)Athbhliain faoi shéan is faoi mhaise dhaoibh (plural)Athbhliain faoi mhaise dhuit (singular) dhaoibh (pl.)Scots Gaelic:Bliadhna Mhath Ùr!