| backwash | To clean the oil from (wood) after combing. Source: Websters Dictionary (01 Mar 1998) |
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| backwash ileitis | Involvement of the terminal ileum by the inflammatory and ulcerative changes seen in chronic ulcerative colitis; distinguished from involvement of ileum and proximal colon by regional (granulomatous) enteritis (e.g., Crohn's disease of terminal ileum and proximal colon). (05 Mar 2000) |