Zool. Pl. lumbrici. [L. lumbrīcus.] a. The earth-worm, L. terrestris. b. The round-worm which infests the intestines, Ascaris lumbricoides (frequently referred to Lumbricus).

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c. 1400.  Lanfranc’s Cirurg., 150. Leie aboue lumbricus of þe erþe, þat beth erþe-wormes staumpid & boilid wiþ oile of rosis.

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1802–12.  Bentham, Ration. Judic. Evid. (1827), V. 202. In a relaxed constitution of the body politic, acquitted and unprosecuted malefactors … are no less congenial … than the tænia, the lumbricus, and the ascaris are to the natural body.

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1808.  Med. Jrnl., XIX. 307. Since taking the electuary, [he] has voided another lumbricus.

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1841–71.  T. R. Jones, Anim. Kingd. (ed. 4), 248. In the Lumbrici,… every ring … is found to support a series of sharp retractile spines.

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  attrib.  1822–34.  Good’s Study Med. (ed. 4), I. 82. The contents of the stomach, together with a lumbricus worm … were effused in the chest.

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