底
HSK 4#849 by frequencyradical 广
bottom; base; background; end (of the month, year etc); remnants; (math.) radix
(equivalent to 的 as possessive particle)
Examples
写字台底下有没有任何书?
办公桌底下有没有任何书?
Part of the HSK 4 word list.
Learn 底 the way it sticks: in sentences built from words you already know, scheduled so you review right before you'd forget.
Start your free weekDefinitions adapted from CC-CEDICT (CC BY-SA 4.0, modified). Example sentences from Tatoeba (CC BY 2.0 FR). Frequency ranks from the BCC corpus. Full credits on the Attributions page.