吸すいかけ

noun which may take the genitive case particle 'no'

half-smoked; partially smoked

Describes a cigarette or similar item that has been lit and partially consumed but not finished. Often used as a noun modifier with の.

• 灰はい皿ざらに吸すいかけのタバコが何なん本ぼんもあった。

  There were several half-smoked cigarettes in the ashtray.