Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
obsessor, ōris, m. [obsideo], one who sits, stays, abides in a place; a frequenter, haunter.
- I. In gen. (only ante-class. and poet.): hoc ego fui hodie solus obsessor fori, sai in the forum alone, Plaut. Ps. 3, 2, 18: vivarum aquarum (of a water-snake), Ov. F. 2, 259.
- II. In partic., milit., a besieger, invester, blockader: obsessor curiae, Cic. Dom. 5, 13: Luceriae, Liv. 9, 15, 3: plus pavoris obsessis quam obsessoribus intulit, Tac. H. 3, 73.