This is the 387th most frequent Icelandic word.
smá
"Smá" means "a little" or "small" in English.
In this sentence, 'smá' modifies the noun 'köku', indicating a small amount or portion of cake.
Ég á smá köku.
I have a little cake.
Here, 'smá' is used as an adverbial expression, meaning 'a little' or 'for a short amount of time'.
Geturðu beðið smá?
Can you wait a little?
In this example, 'smá' acts as an adverb modifying the adjective 'þreyttur', to denote a slight degree.