Related Clues:

• There's firing going on in there (and a pest there too)
• In this one might get fired without any thanks
• Fire makes a grand sound there
• In this there's no thanks for getting fired there
• Storm-drain cover
• Sewer entry
• Women can also use it for going down
• Jar in which to put coal
• Shred - jar
• Irritate - rasp - fireplace
• Grind (teeth)
• Aperture to sewer, duct etc
• Access chamber to sewer or drain
• Be really annoying
• Reduce to small pieces