4
sails
Mainsail:
Jib:
Tack:
Clew:
Head:
Leach:
Lu:
Foot:
Batten:
Sail aft/rearward of the mast (Larger of the two)
Sail forward of the mast (Smaller of the two)
Forward lower corner of a sail
Rear lower corner of a sail
Upper corner of sail
Rear edge of the sail
Forward edge of the sail
Bottom edge of the sail
glossary / useful terminology (...)