saw wood

[AnthonynawoK]

breathe noisily during ones sleep

[Frankykap]

Saw wood is an idiomatic expression generally used in two different contexts.

1. In a literal sense, it refers to the action of cutting wood into pieces using a saw.

2. In a colloquial context, especially in North American English, saw wood is a humorous expression used to indicate that someone is snoring loudly, likening the sound of snoring to the noise produced by sawing wood.

The appropriate meaning is determined based on the context in which the phrase is used.