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Webster 1828 Edition

ppr.

Rending or parting by violence; exploding.

bursting ‎(comparative more bursting, superlative most bursting)

Very eager (to do something).
I was bursting to tell him the secret.
(often followed by "to go to...") Urgently needing to urinate.

Can you tell me where the toilets are? I'm bursting.

The kid is bursting to go to the toilet.

urgently needing to urinate

bursting

bursting ‎(plural burstings)