Green’s Dictionary of Slang

(Irish) to lift or move a person by holding them under the armpits.

1801		‘The Misfortunate Clown’ W.H. Logan Pedlar’s Pack of Ballads (1869) 339: She oxtered him ben to her cham’er.
1966		P. Boyle At Night All Cats Are Grey 64: About the last thing I can remember is Cleary oxtering Kreuger out the bar door.