Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word iuglans could not be parsed. Trying a normal dictionary lookup:
jūglans, glandis, f. [i. q. Jovis glans = Gr. Διὸς βάλανος], a walnut; a walnut-tree: haec glans optima, et maxima, ab Jove et glande juglans appellata est, Varr. L. L. 5, § 102 Müll.: juglandium putamina, Cic. Tusc. 5, 20, 58: juglandium umbra, Plin. 17, 12, 18, § 89.
Also with nux: nuces juglandes, Plin. 15, 22, 24, § 86.