LEGO Glossary
New to LEGO collecting? Here's everything you need to know about sets, minifigures, parts, and more.
Set
A complete LEGO kit sold in a box with a unique set number (like 75192 or 10281). Sets include building instructions and all the pieces needed to build the model. They range from small polybags with under 50 pieces to massive sets with 10,000+.
Example
LEGO Star Wars UCS Millennium Falcon — Set #75192 — 7,541 pieces
Set numbers are printed on the front of the box. In BrickLens, search by this number for an exact match.
Minifigure (Minifig)
The small LEGO character figures that come with sets. A standard minifigure is about 4cm tall and consists of a head, torso, legs, and optional accessories (hair, hats, capes, tools). LEGO has produced over 13,000 unique minifigures.
Example
Luke Skywalker (Jedi Master) — fig-001234
Rare minifigures (especially Collectible Minifigure Series) can be worth more than the sets they come in.
Part (Brick/Piece)
An individual LEGO brick or element. Each unique mold has a part number (like 3001 for a 2x4 brick). The same part can come in dozens of colors. LEGO has produced over 50,000 unique part designs.
Example
Brick 2 x 4 — Part #3001 — available in 50+ colors
Need a replacement piece? Look up the part number in BrickLens to find it on BrickLink, eBay, or BrickOwl.
CMF (Collectible Minifigures)
Special minifigure series sold in sealed blind bags. Each series has 12-16 unique characters. Some CMF figures are extremely rare and valuable, especially from early series.
Example
Series 25, D&D, Formula 1, Spider-Verse series
BrickLens can identify CMF figures by photo — no need to open the bag to find out what's inside.
Retired Set
A set that LEGO no longer produces or sells. Retired sets are only available on the secondary market (eBay, BrickLink, etc.) and often appreciate significantly in value over time.
Example
LEGO Creator Expert Haunted House (10273) — retired, now sells above retail
BrickLens marks retired sets with a badge and tracks their market value across multiple platforms.
Set Number
The unique identifier LEGO assigns to every set, printed on the front of the box. It's usually 4-6 digits (e.g. 75192). In databases like Rebrickable, a variant suffix is added (e.g. 75192-1) to distinguish re-releases.
Example
42151 (Bugatti Bolide), 10281 (Bonsai Tree)
Enter a set number in BrickLens to go straight to pricing and details — no searching required.
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