the world > space > shape > unevenness > condition or fact of receding > hollowness > [noun] > making hollow > underneath
underholing1398
undercuttinga1652
1398 J. Trevisa tr. Bartholomew de Glanville De Proprietatibus Rerum (Bodl.) xiii. xixVnder hoolinge and vnder crepinge and wastinge vnder brymmes..is icleped Alluuio.