bukal noun English. The center, place of greatest depth of s.t., e.g. heartwood of trees; of speech, unmixed with other dialects. Example sentence: Subanen. Dekagu misegbu ditug bukal tubig, milemesu sia. English. When I fell into the deep water, I almost drowned. Example sentence: Subanen. Su gayu, miglalud na, pu' milapuk sug bukalen. English. The tree is hollow, because the inside of it has rotted. Synonym. tapuk In group with: diuleg; gesas; napes; natek