Senses
一点儿/ 一點兒 the least bit
Used in negative sentences with 都 or 也 to mean "not at all" or "not even a little bit"
一点儿/ 一點兒 a bit
a small amount; a little bit of something
一点儿/ 一點兒 slightly
Used after an adjective to express a slightly higher degree or to form a comparative, such as "a bit more" or "slightly -er".
一点儿/ 一點兒 one o'clock
the time of one o'clock