Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OSBL is...

OSBL is

  • OutSide the Battery Limit

OSBL is also in:

Acronym Definition Searched: MEN SIAC BF WZCS DCRR LNBB HF MR TEN AD LIB CSF WAVT 37762 CBC PK