From English-Czech dicts.info/FreeDict Dictionary ver. 0.1.3: thorn <n> osten
thorn <n> osten
From English-Czech dicts.info/FreeDict Dictionary ver. 0.1.3: thorn <n> trn
thorn <n> trn
From English-Czech dicts.info/FreeDict Dictionary ver. 0.1.3: thorn <adj> trní
thorn <adj> trní