The Thracian word kalsas
Word kalsas
Meaning dry, dried up

Other words that might be of interest
achel- ‘water’, ala ‘current, stream’, alta ‘current, stream’, arma ‘swamp’, ars ‘to flow’, arta(s) ‘river’, e(i)b ‘to flow’, iuras ‘water, river’, kaba(s) ‘bog, swamp’, mar ‘water, river, bog’, ostas ‘river mouth’, pala ‘swamp’, sara ‘river’, sind(u)- ‘river’, strumon ‘river’, opa ‘water’, krisos ‘river name’