This word is from the Spanish bocio.
bos·yò
goiter
Most Filipinos these days simply use the English word transliterated as góyter.
Why is there noticeable swelling in the neck of a person who has goiter?
A goiter is an enlarged thyroid gland, which is situated in front of the windpipe.
KAHULUGAN SA TAGALOG
bosyò: paglaki ng glandulang thyroid sa gilid at harapán ng leeg