Noun

1. (physics) deformation of a physical body under the action of applied forces
2. Difficulty that causes worry or emotional tension; ; - r.j.samuelson
3. A succession of notes forming a distinctive sequence
4. (psychology) nervousness resulting from mental stress
5. A special variety of domesticated animals within a species
6. (biology) a group of organisms within a species that differ in trivial ways from similar groups
7. Injury to a muscle (often caused by overuse); results in swelling and pain
8. The general meaning or substance of an utterance
9. An effortful attempt to attain a goal
10. An intense or violent exertion
11. The act of singing

Verb

1. To exert much effort or energy
2. Test the limits of
3. Use to the utmost; exert vigorously or to full capacity
4. Separate by passing through a sieve or other straining device to separate out coarser elements
5. Cause to be tense and uneasy or nervous or anxious
6. Become stretched or tense or taut
7. Remove by passing through a filter
8. Rub through a strainer or process in an electric blender
9. Alter the shape of (something) by stress