Synonym: clasp, close, fasten, hook, latch, seal, shut. Antonym: unlock. Similar words: block, o'clock, local, locate, location, dock, sock, shock. Meaning: [lɑk /lɒk] 
n. 1. a fastener fitted to a door or drawer to keep it firmly closed 2. a strand or cluster of hair 3. a mechanism that detonates the charge of a gun 4. enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it 5. a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key 6. any wrestling hold in which some part of the opponent's body is twisted or pressured. v. 1. fasten with a lock 2. keep engaged 3. become rigid or immoveable 4. hold in a locking position 5. become engaged or intermeshed with one another 6. hold fast (in a certain state) 7. place in a place where something cannot be removed or someone cannot escape 8. pass by means through a lock in a waterway 9. build locks in order to facilitate the navigation of vessels.
n. 1. a fastener fitted to a door or drawer to keep it firmly closed 2. a strand or cluster of hair 3. a mechanism that detonates the charge of a gun 4. enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it 5. a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key 6. any wrestling hold in which some part of the opponent's body is twisted or pressured. v. 1. fasten with a lock 2. keep engaged 3. become rigid or immoveable 4. hold in a locking position 5. become engaged or intermeshed with one another 6. hold fast (in a certain state) 7. place in a place where something cannot be removed or someone cannot escape 8. pass by means through a lock in a waterway 9. build locks in order to facilitate the navigation of vessels. 
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121. Turn a special key, press the brake pedal, and your car's brakes lock.
122. Martin chiselled a hole in the door for the new lock.
123. He picked each lock deftly, and rifled the papers within each drawer.
124. Sell your stocks now to lock in some of the gains of recent months.
125. The best place to catch fish on a canal is close to a lock.
126. We had to move our things lock, stock and barrel to the other side of the country.
127. There's no safety for anyone until he is under lock and key.
128. I just turned the piece of wire in the lock and hey presto, the door opened.
129. A special code is needed to override the time lock.
130. I was fumbling with the key as I couldn't see where the lock was in the dark.
131. Shine the torch on the lock while I try to get the key in.
132. She forgot to lock her door one day and two men got in.
133. If you keep valuables in your house, lock them away somewhere safe.
134. An intruder forced open a lock on French windows at the house.
135. We must put a new lock on the front door.
135. Sentencedict.com try its best to collect and make good sentences.
136. Don't lock it, stupid!
137. My dad's such a cheapskate that he's put a lock on the telephone.
138. Would you be so good as to lock the door when you leave?
139. You lock up the house and I'll get the car out.
140. Pro football still has a lock on male viewers aged 18 to 34.
141. Fit hinge bolts to give extra support to the door lock.
142. to lock the door.
143. You really should lock your car or it'll get stolen.
144. Her jewellery is securely under lock and key at the bank.
145. Ten degrees of frost had frozen the lock on the car.
146. She brushed back a stray lock of hair from her brow.
147. I saw him put the key in the lock, turn it and open the door.
148. He reminded her that he would have to lock and bolt the kitchen door after her.
149. He chiselled a hole in the door to fit a new lock.
150. I could see at once that the lock had been tampered with.