verb

focus all one’s attention on a particular object or activity.

she couldn’t concentrate on the film

focus,direct,centre,centralize,bring to bear,home in on,zero in on,focus one’s attention on,focus on,pay attention to,keep one’s mind on,apply oneself to,address oneself to,devote oneself to,get down to,put one’s mind to,be absorbed in,be engrossed in,be immersed in,think about closely,consider closely,rack one’s brains about/over,cudgel one’s brains about/over,get stuck into

noun

a substance made by removing or reducing the diluting agent; a concentrated form of something.

apple juice concentrate

distillation,essence,extract,decoction,tincture,elixir,quintessence,decocture,apozem