The most common and most likely answer to this crossword clue is the 6 letter word GALORE
I've seen this crossword clue in Independent
G
A
L
O
R
E
More clues leading to the result GALORE
- A gogo dancer's back covered by grand flowering plant
- High wind trapping fighting men in great numbers
- Lass supported by source of metals in abundance
- Convict returns with mineral — and plenty of it
- Bond role in abundance
- Indian city dismissing ban in profusion
- Miss source of metal in abundance
- Prisoner brought up rock in abundance
- Everywhere, 24 pinching himself?
- Stacks of good with adult learning
Buddy explains!
The straight part
We know that "by the truckload" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case by the truckload = galore.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 GALORE mean?
GALORE noun- An abundance; plenty.
- In abundance.