Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ăquĭlīnus, a, um, adj. [aquila], of or pertaining to the eagle, aquiline: ungulae, Plaut. Ps. 3, 2, 63: aspectus, i. e. sharp, App. M. 2, p. 115.