[A reduplicate formation from CLASH v., capable of being used for various parts of speech.]
1. The reciprocal or alternate clash of weapons, hence to go clish-clash.
1597. Breton, Miseries Mavillia, ii. The Speares flew in pieces, then went the Swordes clish clash.
1610. Mirr. Mag., 481 (R.).
| The drums went downe-dun downe, the fluits fit-fite-fit-fite, | |
| The weapons clish-clash and the captaines now-now now. | 
2. Sc. Idle gossip, scandal. Also attrib.
180717. Tannahill, Poet. Wks. (1846), 68. Sic clish-clash cracks.
180879. in Jamieson.