Yes, "bigger" means larger, as in size, height, width, or amount.
As defined by The Free Dictionary, bigger/big is:
Of considerable size, number, quantity, magnitude, or extent; large.
Having great strength or force
Of great significance; momentous
Grown-up; Older or eldest
Synonyms for big:
colossal
considerable
enormous
fat
full
gigantic
hefty
huge
immense
massive
See more suggestions at Thesaurus.com.
Tip! Learn how to improve your vocabulary steadily from Daily Writing Tips.