Obstruction
Other words for "complications" include snag, problem, difficulty, impediment, obstacle, hurdle, and barrier.
The word 'hurdle' functions as both a noun and a verb.EXAMPLESWhen a runner knocked the hurdle into the next lane, another runner went down. (noun)We were able to hurdle the issues that delayed the project. (verb)Her shyness was a hurdle she overcame to perform in the school play. (noun)
Hurdle
That would be a hurdle, which is a type of barrier used in track and field or horse racing events for athletes or horses to jump over during a race.
ozone
heat barrier
Block, blockade, barrier, impediment.
No it is not.
bound leap hurdle
No, the word barrier is not an adverb.The word barrier is in fact a noun.
The likely word is hurdle (to jump, or an obstacle).
If you mean this word in the context of athletics, it is "hurdle".