Welkin
/ˈwelkɪn/
Definition 1 of 1
Pro Tip 1/3Poetic Flair
Use 'welkin' to add a poetic or old-fashioned tone to your writing or speech. 
The welkin displayed its twilight beauty, enchanting the observers below.
Pro Tip 2/3Literary Context
'Welkin' is often found in literature, less so in everyday conversation. 
In Shakespeare's works, the welkin is a constant presence.
Pro Tip 3/3Visual Imagery
'Welkin' evokes strong visual imagery of an expansive, perhaps starry sky. 
They gazed as the moon rose into the silent welkin.