Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
inter-lūco, āre, v. a. [lux], to let the light through a tree by clearing it of its useless branches; to lop or thin a tree (Plinian): interlucata densitate ramorum, Plin. 17, 23, 35, § 214: arbores, id. 17, 12, 19, § 94.