adjoin
Concise Oxford English Dictionary © 2008 Oxford University Press:
adjoin/əˈʤɔɪn/
▶verb (often as adj. adjoining) be next to and joined with.
– origin ME: from OFr. ajoindre, from L. adjungere, from ad- ‘to’ + jungere ‘to join’.
'adjoin' also found in these Oxford entries:

