Εννοια

1. to tense physically, to strain, to tighten
2. to make tense, to stress emotionally
3. to stretch (to increase the extent or results of (e.g., a plan) to near the limit allowed by time or resources)
4. to prepare (a plan or action)
5. to become tightened
6. to tense one's muscles
7. to mobilise oneself