From "The Clancy Brothers & Tommy Makem: Come Fill Your Glass With Us," album (The Tradition Records, originally recorded in 1959, re-released in 1998):
The Gaelic chorus of Cruscin Lan (My Little Full Jug)" means:
Love of my heart, my little jug, Bring health, my darling.

The chorus written 'phonetically' to the English/Americans is as follows:

Oh, graw moh kree moh krooshkeen
Slawnta gal Mohvoorneen,
graw moh kree moh krooshkeen lawn, lawn lawn,
graw moh kree moh krooshkeen lawn,

Let the farmer praise his grounds,
Let the huntsman praise his hounds,
Let the shepherd praise his dewy-scented lambs.
But I, more wise then they, spend each happy night and day
With me darling little cruiscín lán, lán, lán,
With me darling little cruiscín lán.

Chorus
Oh, gradh mo chroide mo cruiscín
Slainte geal Mauver-neen,
Gradh mo chroide mo cruiscín lán, lán, lán,
Oh gradh mo chroide mo cruiscín lán.

Immortal and divine, great Bacchus, god of wine,
Create me by adoption, your own son
In the hope that you'll comply that my glass shall ne'er run dry
Nor me darlin' little cruiscín lán, lán, lán,
Nor me darlin' little cruiscín lán.

(Chorus)

And when grim death appears
In a few but happy years,
He'll say,"Oh, won't you come along with me?
"I'll say, 'Begone, ye knave, for King Bacchus gave me lave
For to fill another cruiscín lán, lán, lán,
For to fill another cruiscín lán.'"

(Cho.)

So fill your glasses high,
Let's not part with lips so dry,
Though the lark now proclaims it is the dawn,
And, since we can't remain, nay we shortly meet again
To share another cruiscín lán, lán, lán,
To share another cruiscín lán?

Chorus...