LATIN DICTIONARYLexicon Latīnum
adverb

sub clāve

sub clāve (not comparable)
Classical[ˈsʊb ˈkɫaː.wɛ]Ecclesiastical[ˈsub ˈklaː.ve]

Meaning

  1. not comparablelocked up, under lock and key

Origins

Literally "under key"; from sub (“under”) + clāve, ablative form of clāvis (“key”).

Quick answers

What does sub clāve mean in Latin?
sub clāve, a adverb, means “locked up, under lock and key”.
How do you pronounce sub clāve?
In classical Latin, [ˈsʊb ˈkɫaː.wɛ]; in ecclesiastical (church) Latin, [ˈsub ˈklaː.ve].