den¹ /den/

1. The hollow lair of a wild animal
2. A pit or cave
3. A haunt of vice or misery
4. A private domestic room or office for work or pleasure (informal)
5. A Cub Scout group (US)
6. A narrow valley, a dean (Scot)

To retire to a den

den mother noun (US)

1. An adult female leader of a Cub Scout group
2. Any adult female protective figure in general

• throstle-cock
• throstle-cocks
• throstle frame
• throstles
• throttle
• throttle back
• throttled
• throttle down
• throttle lever
• throttle pipe
• throttle pipes
• throttler
• throttlers
• throttles
• throttle valve
• throttle valves
• throttling
• throttlings
• through
• through and through
• through ball
• through balls
• through bolt
• through bolts
• through bridge