aborning
Concise Oxford English Dictionary © 2008 Oxford University Press:
aborning /əˈbɔːnɪŋ/
▶adverb chiefly N. Amer. while being born or produced.
– origin 1930s: from a- ‘in the process of’ + US dial. born ‘to be born’.
'aborning' also found in these Oxford entries:

