坴 is not used independently in modern Chinese. It pictures soil 土 heaped up - a big lump of earth. It survives as the phonetic in 陆 (dry land), 睦 (harmonious) and 勖.
register
Archaic only - seen in etymology notes and old texts, not in modern writing or speech.
Components
ideograph
坴lù
a large clod of earth
Read as one block: an upper 土 split by 八 over a lower 土, picturing earth piled on the ground. Indexed under Kangxi radical 土. The whole graph is the phonetic in 陆 and 睦.
Filed under radical 土 (tǔ, #32) by convention. 土 is not a separate component in 坴, so no strokes are highlighted.
