Green’s Dictionary of Slang

1. (US) to move fast.

[1874		Pulaski Citizen (TN) 15 Jan. 3/4: The array of battle came nearer [...] from the great mud mortars of the enemy came squashing and zizzing and splattering right at our head.
1895		Bee (Earlington, KY) 25 Apr. 2/4: Jack [...] leaped upon the bicycle, thinking he would go zizzing down the road.
1899		Columbia Herald (TN) 31 Mar. 2/2: Bullets zizzed over our heads.
1914		Arizona Republican (Phoenix, AZ) 15 Feb. 2/1: Bing! The ball zizzed by! Strike One!
1934		B. Appel Brain Guy (1937) 100: Beyond the elevated highway, the cars zizzing home from work.
1978		S. King Stand (1990) 717: His hands on the controls [...] ready to send about a thousand volts zizzing into his brain.

2. to have a nap or snooze; thus nzizzing n., dozing, napping .

1942		Gen 1 Sept. 13/1: Sleeping is ‘zizzing’ whether it’s on the job or in the hammock [OED].
1989		H. Harrison Bill [...] on the Planet of Robot Slaves (1991) 59: Zizzing and sawing echoed in the still night air.
2002		(ref. 1940s) B. Morrison Things My Mother Never Told Me 87: While my father zizzed on campbeds, she worked in half a dozen English hospitals.

3. (US) to make a sizzling noise.

1936		J.T. Farrell World I Never Made 32: A popcorn machine zizzed in front of the Greek ice-cream parlour.
1953		T. Thursday ‘Case of the Honest Thieves’ in Famous Detective Story 🌐 The phone zizzed. ‘Thanks, Joe,’ said Howard, and hung up.