Plane originally landed yesterday, in an entirely bump-free way (6)
I believe the answer is:
evenly
'an entirely bump-free way' is the definition.
I can't judge whether this definition defines the answer.
'plane originally landed yesterday' is the wordplay.
'plane' becomes 'even' (similar in meaning).
'originally' suggests taking the first letters.
The first letters of 'landed yesterday' is 'ly'.
'even'+'ly'='EVENLY'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for evenly that I've seen before include "In measured or smooth manner" , "without disruption?" , "in a uniform way" , "Equally or smoothly" , "In a level and regular way" .)