Bites from bug, alas, on vacation (5)
I believe the answer is:
tapas
'bites' is the definition.
(I've seen this before)
'bug alas on vacation' is the wordplay.
'bug' becomes 'tap' (synonyms).
'on vacation' says to hollow out the word (remove centre letters) (after the inside letters have vacated the word).
'alas' with its centre taken out is 'as'.
'tap'+'as'='TAPAS'
'from' is the link.
(Other definitions for tapas that I've seen before include "sort of Spanish bar" , "Spanish snacks" , "Spanish eats" , "Savoury snacks" , "Small Spanish dishes" .)