lock, lock in, lock out, lock up, lock together, lock away

[vil]

Dear teachers,

Would you be kind enough to tell me a few further explanatory words about the usage of the verbs in bold in the following sentences?

I noticed Robert and Faces Sunward lingering at the classroom door, locked in a discussion that seemed intense.

lock in = join, involve

The dangerous criminals have all been locked up.

Send someone over with another key; I've locked myself in by mistake.

lock in =

On the newer television sets, the color is locked in so that you don't need to keep changing the controls.

lock in = fix

Money paid into this insurance contract is locked in until you die or stop working.

lock in = deposit, freeze

Although the jewels were locked away (in a strongbox), the thieves stole them without any difficulty.

lock away = lock something in a locker/ safe

If you come home as late as this again, you'll find yourself locked out of the house!

lock out =

His teeth were locked together.

lock together = clasp

Jane was locked in the arms of her husband.

They locked their hands.

lock = entangle; intertwine

V.

[youandcorey]

Vil,
You seem to grasp the correct way to use "lock" in all of your examples. You've put together an interesting collect of examples. I'm sure you'll keep a lock your students' interest and they'll lock these examples deeply into their memory.