n.
Function: transitive verb
Date: 14th century
1 : to testify to : ATTEST
2 : to act as legal witness of
3 : to furnish proof of : BETOKEN
4 a : to have personal or direct cognizance of : see for oneself < witness ed the historic event> b : to take note of <our grammar witness our verb systemis a marvel of flexibility, variety, and exactitude ― Charlton Laird>
5 : to constitute the scene or time of <structures ⋯ which this striking Dorset hilltop once witness ed ― Times Lit. Supp. >
intransitive verb
1 : to bear witness : TESTIFY
2 : to bear witness to one's religious convictions <opportunity to witness for Christ ― Billy Graham>
synonyms see CERTIFY