TAPROOT /ˈtæpˌɹuːt/ Scrabble 9 Words With Friends 10 Definition noun (botany) main root of a plant growing straight downward from the stem. noun something that provides an important central source for growth or development. See all 63 words you can make from TAPROOT → 7-letter words Words starting with T Words ending with T ← Unscramble different letters