My favourite, nip.
light bite
nip
Crunch. bite, chew.
Another word for a small valley is a dell.
pebble
A Gherkin is another name for a small pickled cucumber.
Coronet is another name for a small crown.Tiara is also another word for a small crown.
According to the Wikipedia, 'The term "nibble" originates from the fact that the term "byte" is a homophone of the English word "bite". A nibble is a small bite, which in this context is construed as "half a bite".'
small
another word is plantation(depends on what you are looking for)
synonyms for nibble would include: chew, nip, gnaw, or bite
goodies, bite, break, light meal,