sweat /sw
t/ n. 1 [U] a salty moisture produced by the body through the skin when it is overheated:
The runner's sweat soaked through his shirt. 2 [C] the condition of being covered in sweat from exertion or effort:
She worked up a sweat in the gym.||
He broke into a sweat from pushing his car. 3 usu.sing. [C] a state of worry or anxiety:
We were in a sweat because we were late for the plane. 4 slang no sweat: without worry or difficulty:
I told him that his job would be done on time, no sweat. 
v. 1 [I] to produce sweat from heat, exertion, or hard work:
She was sweating from working in her garden. 2 [I] to work hard:
He sweat for long hours writing that report. 3 to make s.o. sweat: to make s.o. wait anxiously for an opinion or judgment:
She made him sweat before she gave him an answer to his question. 4 phrasal v. sep. [T]
to sweat s.t. out: to wait anxiously for s.t. to happen:
While his wife was in the hospital, he sweated out her illness at home.||
He sweated it out.