dog-end 烟头；香烟屁股

【例句】
The dog-end in the ashtray looks more decadent but has some joy of life. Of course, I never smoke.
烟灰缸里的烟头也显得更加颓废却又了有生趣。当然我自己是不吸烟的。

Pay attention to flammable paragliders. Don't smoke in no-smoking areas and prevent throwing dog-end everywhere.
注意防火，滑翔伞易燃，禁烟区内禁止吸烟，杜绝随地乱丢烟头。