Plural of cheekful; multiple amounts that can fit inside one cheek.
From 'cheekful' + '-s' plural suffix. The plural of '-ful' compounds can be either '-fuls' or the older '-fulls,' but modern English strongly prefers the '-fuls' form.
The plural of 'cheekful' is 'cheekfuls' (not 'cheekfuls'), which demonstrates the ongoing evolution in English—older rules would have said 'cheeksful,' but we've standardized on adding '-s' to the end of the whole compound!
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