"mulls" in the noun sense
1. mull
a term used in Scottish names of promontories
"the Mull of Kintyre"
2. Mull
an island in western Scotland in the Inner Hebrides
"mulls" in the verb sense
1. chew over, think over, meditate, ponder, excogitate, contemplate, muse, reflect, mull, mull over, ruminate, speculate
reflect deeply on a subject
"I mulled over the events of the afternoon"
"philosophers have speculated on the question of God for thousands of years"
"The scientist must stop to observe and start to excogitate"
2. mull
heat with sugar and spices to make a hot drink
"mulled cider"
Source: WordNet® (An amazing lexical database of English)
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