Definitions of "Buck up"

To stumble or meet up with someone or something by chance.

Patois: Mi buck up inna di chair
English: I stumbled into the chair

bump into

Buck up has two meanings;

a). To meet someone; as in, bump into them unexpectedly
b). To gain something like victory or win by luck.

Patois: Mi buck up inna mi teacher inna Coronation Market.
English: I bumped into my teacher in Coronation Market.

Patois: it just a buck up weh him buck up and win. Him coulda never beat mi.
English: it's just that he only got lucky and won. He could never have beaten me.

Meet

To accidentally meet or stumble into someone

Patois: Mi buck up him a di junction
English: I stumbled into him at the junction

All fruits ripe , Babylon , Bad like yaz , Bashy ,

stumble into

Patois: Look weh yuh deh go before yuh buck up inna di wall
English: Look where you are going or you might stumble into the wall

All fruits ripe , Babylon , Bad like yaz , Bashy ,