1 The ‘great toe’. On the pentadactyl hind limb, the digit on the tibial side, which is often shorter than the other digits.
2 The first digit of the foot of a bird, forming the hind toe in many species. In some (e.g. Coliidae) it is reversible, in others (e.g. Apodidae) it points forward, but in some species it is reduced or absent.
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