Desolated is a door when no guests come knocking. Lit. To hang a net on the door and use it to catch sparrows (as no guests ever come).

visitor (guest)

person

sparrow net

unnecessary / useless / unused

being unnecessary / uselessness / being unused

a visit

visit; to call (at someone's house)

spread, fill / swell / put up, spread / stick out (arms, chest), be prominent / stretch a rope, post a cordon / slap / be nervous, be tense / be expensive / add (water) until a container is full

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend