Col legno

col legno performed on a violin:
0 sec: battuto,
9 sec: tratto,
20 sec: ... with tremolo,
33 sec: ... with glissando,
48 sec: battuto with movement of the bow across the fingerboard

In music for bowed string instruments, col legno, or more precisely col legno battuto (Italian for 'with the wood [being hit]'; pronounced [kol ˈleɲɲo batˈtuːto]), is an instruction to strike the string with the stick of the bow across the strings.