tap root defined in 1951 yeartap root - tap root;
tap root - Root system with a prominent main root, directed vertically downwards and bearing smaller lateral roots, e.g. dandelion; sometimes becoming very swollen, containing stored food material, e.g. carrot, parsnip. Compare with: Fibrous root.
near tap root in Knolik
definition of word "tap root" was readed 869 times