Monolingual Filipino dictionary — definitions in Filipino, not English glosses.
Details
A free Filipino-to-Filipino dictionary, which is the tool you want once English glosses stop being precise enough and you need to know what a word means in its own language. Working monolingually is also the fastest way to stop translating in your head. Because everything is defined in Filipino it is unusable below roughly B1, and coverage of slang and regional words is thinner than Tagalog.com's bilingual data.