Fall asleep and Sack out

Fall asleep verb - Change from a waking to a sleeping state.

Sack out and fall asleep are semantically related (North American) in suspend consciousness topic. In some cases you can use "Sack out" instead a verb phrase "Fall asleep". informal substitute

Sack out verb - Prepare for sleep.

Fall asleep and sack out are semantically related in suspend consciousness topic. You can use "Fall asleep" instead a verb "Sack out".