Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† pĕlĕcānus and pĕlĭcānus, i, m., = πελεκάν, πελεκᾶς, πελεκάνος, a pelican, Hier. in Psa. 101; Vulg. Psa. 101, 7.