The most common and most likely answer to this crossword clue is the 8 letter word PORTABLE
I've seen this crossword clue in The Daily Telegraph
P
O
R
T
A
B
L
E
More clues leading to the result PORTABLE
- Easy to carry, wine and beer bachelor brought in
- Pair carrying old item of furniture easy to get to the skip?
- Easily transported by river on a piece of rough board
- Piano or other furniture item easily carried
- Lightweight boxer’s last to enter, fit for consumption
- Easy to carry — piano or desk?
- Wine expert? Lightweight!
- Page or display of data easily moved
- Left fit and light of weight
- Mobile, laptop or tablet features
Buddy explains!

The straight part
We know that "Lightweight" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lightweight = portable.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PORTABLE mean?
PORTABLE noun- A portable building used for temporary purposes, particularly:
- A hand-held video gaming device.
- Able to be carried or easily moved.
- Able to be transferred from one organization to another.
- Of software, able to be run on multiple hardware or operating systems.
- A microcomputer powered by batteries with an integral display screen and integral input device (such as a keyboard) that can be used on the move