Related Clues:

• Become entrenched
• Start to eat and drink after I'd given up
• Invitation to trencherman
• Begin eating (informal)
• Be stubborn while competing at tug-of-war?
• "Eat up!"
• "Start eating!"
• ''Go ahead and eat!''
• "Eat!"
• Detective has a drink to start eating
• Prepare for a siege
• Enjoy the food, girl - and the booze!
• Begin eating heartily
• Amid sound of battle, soldier must prepare trench
• Like getting home to eat heartily