Words starting with O that end in P

noun

The hash or square symbol (#), used mainly in telephony and computing.

noun

a sloping one-way road leading off a main highway.

1. The art or practice of successively outdoing a competitor.

   They are bent on one-upmanship. I think

1. An operation.

   My mother's going in for her knee op today.

2. An amateur radio operator.
3. An operator on

abbreviation, symbol

opposite.