Related Clues:

• Could be a granny or a sheepshank
• Unit of length used in navigation
• Geometric figure with five or more sides
• A nautical mile per hour
• Unit of speed at sea
• Hard mass in tree trunk at branch joint
• 'Figure, outline (5)'
• Sounds as if one parrot has left, and several more besides, perhaps
• That isn't sound
• Just figure how the parrot could have escaped, by the sound of it
• It isn't the sound of the sound of the tide
• Such speed on the water might lead to a tie
• That isn't the sound of the tide, by the sound of it
• Sounds as if it isn't the tide
• The sound of the tide? Sounds as if it isn't