Po definitions

Postal order.
abbreviation
89
5
Putout(s)
abbreviation
85
3
Petty Officer.
abbreviation
84
2
Postal order.
abbreviation
78
3
Post Office.
abbreviation
76
3
A river of northern Italy flowing about 650 km (405 mi) generally eastward to the Adriatic Sea. The Po Valley is a major industrial and agricultural area.
75
4
Post office box.
abbreviation
72
1
Per os (by mouth)
abbreviation
72
2
Purchase order.
abbreviation
71
3
Personnel officer.
abbreviation
68
2
River in N Italy, flowing from the Cottian Alps east into the Adriatic: 405 mi (652 km)
proper name
66
2
Petty officer.
abbreviation
65
1
Polonium.
symbol
64
2
Postal order.
abbreviation
62
2
Post office.
abbreviation
59
2
Putout.
abbreviation
56
2
Po is defined as by mouth, or a post office, or a putout in baseball.

An example of something po is the notation on a prescription of a medication to be taken by mouth.

An example of a po is a post office.

An example of a po is the person who has just hit the ball when an out is called.

abbreviation
6
1
Per os (by mouth)
abbreviation
5
3
(obsolete) A peacock.
noun
1
1
(UK, Australia, New Zealand, colloquial, dated) A chamberpot.
noun
1
1
Op, op., OP.
anagrams
1
1
(colloquial) Shortened form of poor.
adjective
1
1

Origin of po

Old English pawa (pāwa), from West Germanic, from Latin pavo (pāvo). Cognate with Dutch pauw, German Pfau.