Ainda não temos significados para "hear a snicker".
1She was just about to get into the car when she heard a snicker behind her.
2Then, she heard a snicker from the shore.
3Then she heard a snicker behind them.
4The minister was preaching and everything was quiet and solemn when he heard a snicker behind him.
5When she mispronounced the name of a minor character, she'd heard a snicker at the back of the room.