1. makes safe or protected from danger, harm, or loss
2. obtains or gets something, especially with effort
3. fastens or attaches firmly in place

Examples

• She secures the door with three different locks.
• The company secures its data with advanced encryption.
• He secures a scholarship to attend college.
• The team secures victory with a last-minute goal.
• The sailor secures the rope to the dock.
• The climber secures the safety harness before ascending.
• The bank secures the loan with collateral.