Definition: To fill (something) so that it is not possible to pass.

Alright class, settle down and listen close, Let’s tackle this word, let’s make it compose! “Blocked,” the dictionary tells us with glee, Means something's completely full, you see. It's like a drain, overflowing slow, Or pipes so tight, no water can flow! Think of a road, jammed up and tight, No cars can pass, not morning or night. That’s “blocked,” my dears, it’s quite the same, When something's full – it’s stopped in its game! So if you say a channel is blocked, it's true, It means no signal can get through! Do you understand? Any questions to share?

Definition: To become fastened in place.

Alright class, settle down and let’s take a look, At this word “locked,” a simple book! The dictionary tells us, clear and true, “To become fastened in place,” for me and you. Let's break it down with a little rhyme, Think of a door, frozen in time. A key is needed, to set it free, That’s what “locked” means, you see! It's about something staying still and tight, Not moving or opening, with all its might. Like a box with a latch, secure and sound, Or a chest of treasures, safely bound. Do you understand? Any questions now? Let’s make sure this meaning, we all allow!

Definition: Common SQL Column

SELECT FROM table_name WHERE column_name = 'locked';