interfinger adjective 1verb 1forms 3 adjective1 •Between two zinc fingers. verb1 •To interpenetrate in long alternating strips like clasped fingers.The lagoon deposits overlie and interfinger with beach sands in SAV3 and SAV4, which overlie an early Holocene estuary deposit in SAV4. — 2001 formsinterfingered · interfingering · interfingers