Cryptic crossword clue
Small part of what comes next said you fell in love head over heels 5

The most common and most likely answer to this crossword clue is the 5 letter word OVULE

I've seen this crossword clue in The Guardian
O
V
U
L
E


Buddy explains!

The straight part
We know that "Small part of what comes next" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case small part of what comes next = ovule.
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 OVULE mean?

OVULE noun
  1. The structure in a plant that develops into a seed after fertilization; the megasporangium of a seed plant with its enclosing integuments.
  2. An immature ovum in mammals.

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