Frequentative of root. So root + -le.
rootle (third-person singular simple present rootles, present participle rootling, simple past and past participle rootled)
- (of an animal) to dig into the ground, with the snout
- 1929, Virginia Woolf, A Room of One's Own, Penguin Books, paperback edition, page 11
- Once, presumably, this quadrangle with its smooth lawns, its massive buildings, and the chapel itself was marsh too, where the grasses waved and the swine rootled.