Stretchy Scrabble piece covers multiple spaces (7)
I believe the answer is:
tensile
'stretchy' is the definition.
(I've seen this in another clue)
'scrabble piece covers multiple spaces' is the wordplay.
'scrabble piece' becomes 'tile' (Scrabble is played with tiles with letters on).
'covers' means one lot of letters goes inside another.
'multiple spaces' becomes 'ens' (in printing, spaces as wide as a letter 'n'. I am not sure about the 'multiple' bit.).
'tile' enclosing 'ens' is 'TENSILE'.
Can you help me to learn more?
(Other definitions for tensile that I've seen before include "Capable of being stretched, kind of strength" , "Able to be stretched" , "Capable of being drawn out or stretched" , "Relating to tension" , "Capable of stretching" .)