What is the meaning of сам?

self, -self

alone, by oneself

the very ..., the ... himself/herself/itself

with beckoning verbs in the imperative: here, in this place

comb

alone, by oneself

comb

eye

seed

self, -self

self, -self

alone, sole

the very

unaided, single-handed

absolute, mere, unmixed

solitary, secluded

first-person singular present enclitic of би̏ти

self, -self

Source: wiktionary.org