We don't have synonyms for calombo yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are colombo and palombo.
(n) :
Alternative form of calumba. [(medicine, archaic) A bitter root of a plant (Jateorhiza palmata), indigenous to Mozambique, and used as a tonic and antiseptic.]
(n) :
Alternative form of calumba. [(medicine, archaic) A bitter root of a plant (Jateorhiza palmata), indigenous to Mozambique, and used as a tonic and antiseptic.]