zizz
noun
[ zɪz ]
• a whizzing or buzzing sound.
• "the metallic zizz of the starter motor"
• a short sleep.
• "Angus was in his basket having a zizz"
zizz
verb
• make a whizzing or buzzing sound.
• "the banger started zizzing furiously"
• doze; sleep.
• "Louise zizzed most of the time, stretched out on a sofa"
Origin:
early 19th century: imitative.