- British a motor torpedo boat
Examples from the Web for mtb
He straightened the MTB out and rammed the throttles to full speed.
He hauled it to the stern of the MTB and attached the line to a cleat.
The MTB was allowed to drift while the group went about the business of making ready.
If the MTB got within swimming distance, the pirates would see it.
The pirates scrambled to cover against this new menace as the MTB swept by.