烙 (lào) is a verb meaning 'to brand', 'to iron', or 'to bake on a flat surface'. You'll see it in words like 烙印 'brand mark', 烙铁 'soldering iron / branding iron', and 烙饼 'baked flatbread'. This reading is distinct from the luò reading in the ancient word 炮烙 (páo luò, a torture device). The character is rarely used alone in modern Chinese; it appears mainly as a bound morpheme in compounds.