单词	o-grade
释义	o-grade noun linguistics : a phase of a root or of an affix that appears in an ablaut series and is characterized by the vowel o (see grade entry 1 sense 4) Word History First Known Use 1891, in the meaning defined above
随便看	cockroaches cocks cocks a snook cocks a snook (at) cocks a snook at cockscomb cockscomb oyster cockscomb pyrites cockscombs cocksfoot cocksfoots cockshies cockshots cockshut cockshuts cockshy cocksman cocksmen cockspur cockspur flower cockspur grass cockspur hawthorn cockspur thorn cockspurs cocksucker

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