Keep up aloft somehow (5)
I believe the answer is:
float
'keep up' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'aloft somehow' is the wordplay.
'somehow' indicates an anagram.
'aloft' anagrammed gives 'FLOAT'.
Can you help me to learn more?
(Other definitions for float that I've seen before include "Put forward (an idea)" , "Petty cash - rest on a liquid's surface" , "Rest on the surface of a fluid" , "What ships do" , "launch" .)