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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181. Despite our attempts to break it, the lock would not yield.
182. Lock up any valuables. Things tend to walk here .
183. We broke open the lock with the help of spanner.
184. He moved the whole company, lock, stock, and barrel, to Mexico.
185. He gently pushed a lock of hair from her eyes.
186. She eventually had to lock herself in the toilets to avoid him.
187. Make certain that you lock the door if you go out.
188. We opened the sluices and the upstream water of the river poured into the lock.
189. They dug up their New Jersey garden and moved it lock, stock, and barrel back home.
190. At that moment he heard Gill's key turning in the lock of the door.
191. He had three tries at mending the lock and gave up.
192. She tucked an unruly lock of hair behind her ear.
193. He rammed the key into the lock and kicked the front door open.
194. They heard a key turn in the back door lock.
195. The smaller wrestler held his opponent in a full body lock.
196. I have one lock but I bought another as an additional insurance against thieves.
197. He reminded me to lock up the house when I go out.
198. I'd only gone a few steps down the road when I realized I'd forgotten to lock the door.
199. I'm sorry,(www.Sentencedict.com) there isn't a lock on the bathroom door.
200. Close all doors and lock them when you go out. The same goes for windows.
201. He used to lock himself in his bedroom for hours on end and refuse to talk to anyone.
202. The door won't lock.
203. There is a lock of Napoleon's hair in the display cabinet.
204. Prisoners are kept under lock and key 24 hours a day.
205. She shrugged a stray lock of hair out of her eyes.
206. Please don't omit to lock the door when you leave.
207. What worried him was that his broken key jammed the lock.
208. Manda cried out that Mr Hoelt had no right to lock her in.
209. If the lock has frozen up,(sentencedict.com) try lubricating it with oil.
210. It was too late now for Blake to lock his room door.