La fessura permette un incastro.

The rock crack allows a wedging move.

Breakdown of La fessura permette un incastro.

• permettere: to allow
• la fessura: the rock crack
• l'incastro: the jam; wedging move

Questions & Answers about La fessura permette un incastro.

What is the basic structure of La fessura permette un incastro?

It breaks down like this:

• La fessura = the slit / the slot / the opening
• permette = allows / makes possible
• un incastro = a fitting together / an interlocking fit / a joint

So the structure is:

• subject: La fessura
• verb: permette
• object: un incastro

It is a very normal Italian sentence pattern: subject + verb + object.

Why is it permette?

Because permette is the third-person singular present of permettere (to allow / to permit).

The subject is la fessura, which is singular, so the verb must also be singular:

• io permetto = I allow
• tu permetti = you allow
• lui/lei permette = he/she/it allows

Here, la fessura is grammatically like it, so:

• La fessura permette = The slot/opening allows

What exactly does fessura mean?