In Hebrew, one-letter prepositions are not separated from the next word by a space. The lamed in לַשְּׂעִירִם is a preposition and therefore not part of the word that interests you, which is
(the word has two yods), which is actually a homograph for two words:
a pluralis tantum meaning 'showers' (rains).
the plural of the word spelled sin ayin ...