Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. rēspersus, a, um, Part. of 1. respergo.
2. rēspersus, ūs, m. [1. respergo], a sprinkling over, besprinkling (only in abl. sing.): pinnarum, Plin. 10, 3, 3, § 9: urinae, id. 24, 17, 102, § 163 dub. (Jan.: urinā adspersā).