—adj. 1. free from or not exposed to danger or harm; safe.
2. dependable; firm; not liable to fail, yield, become displaced, etc., as a support or a fastening: The building was secure, even in an earthquake. 3. affording safety, as a place: He needed a secure hideout. 4. in safe custody or keeping: Here in the vault the necklace was secure. 5. free from care; without anxiety: emotionally secure. 6. firmly established, as a relationship or reputation: He earned a secure place among the baseball immortals. 7. sure; certain; assured: secure of victory; secure in religious belief. 8. safe from penetration or interception by unauthorized persons: secure radio communications between army units. 9. Archaic.overconfident.
—v.t. 1. to get hold or possession of; procure; obtain: to secure materials; to secure a high government position. 2. to free from danger or harm; make safe: Sandbags secured the town during the flood. 3. to effect; make certain of; ensure: The novel secured his reputation. 4. to make firm or fast, as by attaching: to secure a rope. 5. Finance. a. to assure payment of (a debt) by pledging property.
b. to assure (a creditor) of payment by the pledge or mortgaging of property.
6. to lock or fasten against intruders: to secure the doors. 7. to protect from attack by taking cover, by building fortifications, etc.: The regiment secured its position. 8. to capture (a person or animal): No one is safe until the murderer is secured. 9. to tie up (a person), esp. by binding the person's arms or hands; pinion.
10. to guarantee the privacy or secrecy of: to secure diplomatic phone conversations.
—v.i. 1. to be or become safe; have or obtain security.
2. Naut. a. to cover openings and make movable objects fast: The crew was ordered to secure for sea. b. to be excused from duty: to secure from general quarters.