What does leptus mean in Latin?

leptus, a adjective, means “thin, slender”.

How do you pronounce leptus?

In classical Latin, [ˈɫɛp.tʊs]; in ecclesiastical (church) Latin, [ˈlɛp.tus].

adjectivefirst/second-declension adjective

leptus (feminine lepta, neuter leptum)

Classical[ˈɫɛp.tʊs]Ecclesiastical[ˈlɛp.tus]

singular
form	masculine	feminine	neuter
nominative	leptus	lepta	leptum
genitive	leptī	leptae	leptī
dative	leptō	leptae	leptō
accusative	leptum	leptam	leptum
ablative	leptō	leptā	leptō
vocative	lepte	lepta	leptum

plural
form	masculine	feminine	neuter
nominative	leptī	leptae	lepta
genitive	leptōrum	leptārum	leptōrum
dative	leptīs	leptīs	leptīs
accusative	leptōs	leptās	lepta
ablative	leptīs	leptīs	leptīs
vocative	leptī	leptae	lepta

From Ancient Greek λεπτός (leptós, “thin, slender”).