Artificial intelligent assistant

rilled

rilled, a.
  (rɪld)
  [f. rill n.1, rille + -ed2.]
  Marked by or possessing rills or rilles; having narrow grooves.

1924 R. Newstead Guide to the Study of Tsetse-Flies 24 Wings with the membrane slightly rilled. 1935 O. Davies Roman Mines in Europe i. 39 In prehistoric times ore was pounded with rilled hammers. 1957 N. K. Sandars Bronze Age Cultures in France iii. 130 Rilled [G. gerillt] ware pots are of various shapes... Rilled decoration appears quite suddenly in France with graves and bronzes. 1970 R. E. Horton in G. H. Drury Rivers & River Terraces v. 154 In the latter case..a rilled surface may not develop. 1974 Nature 12 Apr. 573/2 The two large craters Oppenheimer and Schrödinger were also rilled. Small rilled craters are again found within larger flat-floored craters.

Oxford English Dictionary

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