Nice head of lettuce held by worker on the land (8)
I believe the answer is:
pleasant
'nice' is the definition.
(associated in meaning)
'head of lettuce held by worker on the land' is the wordplay.
'head of' suggests taking the first letters.
'held by' indicates putting letters inside.
'worker' becomes 'ant' (worker is a type of ant).
'on' means one lot of letters go next to another.
'the land' becomes 'peas' (I can't justify this - if you can you should give a lot more credence to this answer).
The initial letter of 'lettuce' is 'l'.
'ant' put after 'peas' is 'peasant'.
'l' put within 'peasant' is 'PLEASANT'.
Can you help me to learn more?
(Other definitions for pleasant that I've seen before include "Charming" , "Enjoyable, agreeable" , "Affable, good-humoured" , "Likeable, friendly" , "sweet?" .)