The most common and most likely answer to this crossword clue is the 5 letter word LLAMA
I've seen this crossword clue in The Times
L
L
A
M
A
More clues leading to the result LLAMA
- South American native in Lima with Buddhist monk
- Soft fabric supplier from America completely revolutionised
- Beast of burden carrying large Tibetan priest
- Pounds carried by monk's beast of burden
- Wool supplier from a shopping complex turning up
- Fleece supplier a shopping centre rejected
- Buddhist priest reported animal in the wild
- Transport animal a shopping centre returned
- American transporter hit in Los Angeles
- A lot of shops brought back supplier of wool
Buddy explains!

The straight part
We know that "beast of burden" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case beast of burden = llama.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 LLAMA mean?
LLAMA noun- A South American mammal of the camel family, Lama glama, used as a domestic beast of burden and a source of wool and meat.