Final answer:
The best definition for 'pate' from the context of the poem is 'head or scalp,' as it suggests a part of the body that can be charred by lightning.
Step-by-step explanation:
The student has asked to determine the BEST definition for the word 'pate' in line 15 using context clues. Based on the context of the poem, where it mentions 'the lightning left a char on the elder’s pate,' 'pate' can be understood as another term for the head or scalp. The reference to lightning leaving a char indicates the physicality of the 'pate,' implying that it is a part of the body that can be marked or struck.