Definition of quests:
(n) :
A journey or effort in pursuit of a goal (often lengthy, ambitious, or fervent); a mission.
(n) :
The act of seeking, or looking after anything; attempt to find or obtain; search; pursuit.
(n) :
(video games, roleplaying games) A task that a player may complete in order to gain a reward or advance the story.
(v) :
(intransitive) To seek or pursue a goal; to undertake a mission or job.
(v) :
(transitive) To search for something; to seek.
(v) :
(entomology, of a tick) To locate and attach to a host animal.