ani(n = noun.animal) - black tropical American cuckoo;
is a kind of cuckoo
is a member of crotophaga, genus crotophaga

   A black bird of tropical America, the West Indies and Florida (Crotophaga ani), allied to the cuckoos, having a compressed, bladelike bill and remarkable for communistic nesting. [1913 Webster]

musculus sphincter ani, musculus sphincter ani externus, musculus sphincter ani internus, pruritus ani, sphincter ani