Spanish, diminutive form (ending "-ito") of "despacio" = slowly/quietly/softly. The diminutive form "despacito" is used in order to sound friendly.
1) Vamos a caminar despacito para que usted* no se canse.

*polite form

We're going to walk slowly so you don't get tired.

2) Habla más despacito por favor.

Speak more quietly, please.

3) Toca despacito la cabeza del bebé, ten cuidado.

Touch the baby's head softly, be careful.
by WDFE September 26, 2017
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despacito is a song made by Luis Fonsi (and I have no idea why you search this up)
by cummo by 6ix9ine February 17, 2019
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The common name for a siren's song or alternatively used as a positive description of a song.
OMG that song is so Despacito.
by TheAlmightyBRUH March 3, 2020
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