beetroot

Etymology

From beet + root.

noun

1. (UK, New Zealand, Australia) A normally deep-red-coloured root vegetable usually cooked or pickled before eating; Synonym of beet.
2. (usually uncountable) The edible part of the root of a beet plant, raw or prepared.

verb

1. (intransitive, informal) To turn a bright red or purple colour.
   He straightened up as a spring, beetrooted to the root of his pale hair, and answered wildly, "Ki-Ki-Kan!" I backed prudently towards the door, still keeping that indulgent but firm expression no one sees on the face of warders in lunatic asylums. 1919, The Sketch: A Journal of Art and Actuality, volume 108, page 356
   Harmon's face beetrooted. He strode from the office, stared at the cell block, and swore with artistry. 2014, Arthur W. Upfield, Bony and the Mouse