Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
spīcŭlo, āvi, ātum, 1, v. a. [spiculum], to sharpen to a point, to point (post-Aug. and very rare): telum, Plin. 11, 2, 1, § 3: mantichorae cauda spiculata, Sol. 52, § 37.