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 coassare could not be parsed. Trying a normal dictionary lookup:
No entries found. Showing closest matches:
cŏassātio (cŏax-), ōnis, f. [coasso], a joining of timber (boards or planks) together; hence in concr., a boarded floor, Vitr. 6, 3, 9; 7, 1, 1 sq.
In plur., Plin. 36, 25, 62, § 186.