Crossword Genius

It's built with sound glue at the medical centre (5)

Ross

I believe the answer is:

igloo

I'm a little stuck... Click here to teach me more about this clue!

'centre' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I can't see?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for igloo that I've seen before include "series of chilly blocks" , "Arctic dwelling" , "basic dwelling" , "packed house" , "Icy home for Eskimo" .)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app