11a- game in which two players take turns to collect objects from a number of heaps while trying to avoid collecting the last remaining object (3) N?M
12a- tall upright pillar decorated with flowers erected for dancing around on the first day of the fifth month of every year (7) M?Y?O?E
19a- Any one of the three tendons at the back of the human thigh responsible for flexion of the knee ((9) ?????R?N?
20d island of the lesser antilles (5) ??U?A