We don't have synonyms for palanka yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are palatka, palanca and palanga.
(n) :
(military, historical) A permanently entrenched wooden camp attached to Turkish frontier fortresses.
(n) :
Obsolete form of palanquin. [(India, chiefly historical) An enclosed human-borne litter or sedan chair, a large box with a chair, couch, or bed raised on horizontal poles and used as a mode of transport.]
(n) :
(military, historical) A permanently entrenched wooden camp attached to Turkish frontier fortresses.
(n) :
Obsolete form of palanquin. [(India, chiefly historical) An enclosed human-borne litter or sedan chair, a large box with a chair, couch, or bed raised on horizontal poles and used as a mode of transport.]