P.O. commemoratives (4 letters) — Crossword Helper

Enter a clue or pattern or both:

The Clue

P.O. commemoratives (4 letter answer)

The Answer

STPS

Tags

abbr additive commemorative item knob motor oil organ po postage stp

Notes

The answer STPS is so rare that it appears less than once every 2500 puzzles.

Related Clues

Motor oil additives
Organ knobs: Abbr.
Postage items: Abbr.

Definition

STP as a noun:

1. (STP, s.t.p.) = standard temperature and pressure