Three letter word ending of

Some nouns that end with O are:

1. avocado
2. banjo
3. barrio
4. bongo
5. buffalo
6. cargo
7. Dumbo
8. echo
9. Eggo
10. ego
11. flamingo
12. Geo
13. Geronimo
14. ghetto
15. gigolo
16. halo
17. hero
18. hobo
19. Jello
20. kangaroo
21. lasso
22. LOGO
23. mango
24. mojito
25. motto
26. nacho
27. Ohio
28. Oreo
29. patio
30. photo
31. piano
32. piccolo
33. potato
34. radio
35. rhino
36. solo
37. studio
38. taco
39. tango
40. tattoo
41. tomato
42. torpedo
43. trio
44. veto
45. video
46. volcano
47. weirdo
48. yo-yo
49. zero
50. zoo