巨 is in 巨大 (jùdà, enormous), 巨人 (jùrén, giant), 巨额 (jù'é, huge amount). In internet slang, 巨 is used like 'super': 巨好吃 (super delicious).
Components
pictograph
巨jù
huge; carpenter's square
Self-component — 巨 is essentially atomic. The original pictograph showed a person holding a large carpenter's L-shaped square; the figure later dropped away, leaving today's 4-stroke frame. Because 'great square' was a literal big tool, 巨 generalised to 巨大, 巨人. Indexed under Kangxi #22 匚 (fāng) via the open-box silhouette.
Filed under radical 匚 (fāng, #22) by convention. 匚 is not a separate component in 巨, so no strokes are highlighted.
