صربة doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 2 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• صَرْبَةٌ

  صَرْبَةٌ ذ : see صَرْبٌ, in two places. -b2- Hence, (tropical:) The water [by which is meant the seminal fluid] that collects in the back [of a man]; as being likened to the [sour] milk that is collected in a skin. (M, T…

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• صَرَبَةٌ

  صَرَبَةٌ ذ : see صَرْبٌ, in three places. -b2- Also A herb, (M, K,) and tree, (M,) that becomes green, and puts forth leaves, when dry, or that has grown, or become somewhat restored to a good state, after having been ea…

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