There are 2 main definitions of largo in English:

largo1

Syllabification: lar·go
Pronunciation: /ˈlärɡō
 
/
Music

adverb& adjective

(Especially as a direction) in a slow tempo and dignified in style.
More example sentences
  • Now, the pianist will either feel daunted or liberated by the fact that Prélude no.4 bears no time signature: we are simply told largo, espressivo.

noun

(often Largo) (plural largos) Back to top  
A passage, movement, or composition marked to be performed in this way.
More example sentences
  • The second movement, largo, is begun by the piano in a delicate shift away from the minor theme: the transition was handled adeptly by Goode, who set a perfect tempo for the burst of strings which enters upon his last bar.
  • Handel's Xerxes begins with a famous largo, ‘Shade as it never was’ (Ombra mai fu), sung by the self-same King of Kings to his beloved: a plane tree.

Origin

Italian, from Latin largus 'copious, abundant'.

Definition of largo in: