I. ˈōˈes transitive verb
( OSed ; OSed ; OSing ; OSes )
Etymology: abbreviation of order sheet or on sheet
: to record the time of arrival and departure of (a train) by telegraphing the information prefixed by the signal OS and the office call
turned to the key to OS his first train out — Trains
II. abbreviation
1.
[Latin oculus sinister ]
left eye
2. off stage
3. old school
4. old series
5. old side
6. old style
7. one side
8. only son
9. on sale
10. on sample
11. on schedule
12. on sheet
13. on side
14. ordinary seaman
15. original series
16. out of stock
17. outside
18. outside sentinel
19. outsize
20. outstanding