The most common and most likely answer to this crossword clue is the 10 letter word TRADITIONS
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More clues leading to the result TRADITIONS
Buddy explains!

The straight part
We know that "practices" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case practices = traditions.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 TRADITIONS mean?
TRADITIONS noun- A part of culture that is passed from person to person or generation to generation, possibly differing in detail from family to family, such as the way to celebrate holidays.
- A commonly held system.
- The act of delivering into the hands of another; delivery.