1. 唾沫：spitting image 简直一模一样的人 | spittle 唾沫 | spittoon 痰盂

2. spittle的解释

2. 唾液：spirometer 呼吸计 | spittle 唾液 | splanchnic mesoderm 脏壁层

3. 吐出的泡沫：spitter 吐痰的人 | spittle 吐出的泡沫 | spittle 唾沫

4. 痰/唾沫/吐出的泡沫：spitter /吐痰的人/ | spittle /痰/唾沫/吐出的泡沫/ | spittoon /痰盂/

1. 唾液;唾沫
    Spittle is the watery liquid which is produced in your mouth.

    e.g. Spittle oozed down his jaw.
           唾液顺着他的下巴流下来。

1. a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth
    moistens the mouth and starts the digestion of starches

    Synonym: salivaspit