From en.wiktionary.org:
** Italian
*** Etymology
[it]. Possibly from a slang expression. Compare [pt], [es] and [ca].
*** Pronunciation
[lèsto]
*** Adjective
[it-adj]
1. quick , fast
**** Derived terms
{{col|it |lestamente |lesto di lingua |lesto di mano |allestire }}
**** Descendants
- [fr]
*** Further reading
- [R:it:Trec]
*** Anagrams
- [it]
** Portuguese
*** Etymology
Perhaps from [pt]; compare [goh,non], [en], [it] and [es]. Alternatively,
possibly from a [pt] or [la], reduced from [la], as an alteration of [pt],
participle of [la].
*** Pronunciation
[lésto]
*** Adjective
[pt-adj]
1. agile
*** Further reading
- [R:pt:Infopédia]
- [R:pt:Priberam]
** Tocharian B
*** Etymology
An uncertain formation, but ultimately from [txb], whence [txb]. Cognate with
[xto]. Also related to [txb].
*** Noun
[txb]
1. nest (of a bird), den (of an animal), lair
**** Related terms
{{col|txb |leke |leki |lest |lyäk- |lyak }}
*** References
- [head=lesto]