| ano | <ornithology> A black bird of tropical America, the West Indies and Florida (Crotophaga ani), allied to the cuckoos, and remarkable for communistic nesting. Origin: Native name. Source: Websters Dictionary (01 Mar 1998) |
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| fissure in ano | A painful linear ulcer at the margin of the anus. It appears as a crack or slit in the mucous membrane of the anus and is very painful and difficult to heal. (12 Dec 1998) |