Grus 
(grŭs, grs)
(grŭs, grs)n.
A constellation in the Southern Hemisphere near Indus and Phoenix.
[Latin grūs, crane; see gerə-2 in the Appendix of Indo-European roots.]
- on-screen
- onset
- onshore
- onside
- onside kick
- on sight
- onsite
- onslaught
- on soapbox
- on (someone's) account
- on someone's account
- on (someone's) back
- on someone's back
- on (someone's) case
- on someone's case
- on speaking terms
- on spec
- onstage
- on standby
- on steroids
- onstream
- on-stream
- on stream
- on strike
- -ont