1. to be very stiff.

It's so cold out there - the washing was as stiff as a board when I brought it in off the line.

2. if you are as stiff as a board, your body feels stiff and hurts when you try to move it, usually after a lot of physical exercise.

I cycled fifty miles yesterday and when I woke this morning I was as stiff as a board.

• when something sneezes, something catches a cold
• When the cat's away .
• When the cat's away the mice will play.
• when the chips are down
• when the dust settles
• when the going gets rough
• when the going gets tough
• when the spirit moves
• when the spirit moves you
• when was a mere twinkle in father's eye
• when was a mere twinkle in their father's eye
• when was a twinkle in father's eye
• when was a twinkle in their father's eye
• when your ship comes in
• where is coming from
• where someone is coming from
• Where's the beef?
• Where there's a will there's a way!
• Where there's muck, there's brass.
• where there's smoke, there's fire
• whet appetite
• whether by accident or design
• whether or not
• whet someone's appetite
• which way the wind is blowing