knag /nag/

1. A knot in wood
2. A peg

• grovel
• groveled
• groveler
• grovelers
• groveling
• grovelled
• groveller
• grovellers
• grovelling
• grovels
• groves
• grovet
• grovets
• grow
• growable
• grow-bag
• grow-bags
• grower
• growers
• growing
• growing-bag
• growing-bags
• growing pains
• growing-point
• growing-points