"fells" in the noun sense
1. hide, fell
the dressed skin of an animal (especially a large animal)
2. fell, felled seam
seam made by turning under or folding together and stitching the seamed materials to avoid rough edges
3. fell
the act of felling something (as a tree)
"fells" in the verb sense
1. fell, drop, strike down, cut down
cause to fall by or as if by delivering a blow
"strike down a tree"
"Lightning struck down the hikers"
2. fly, fell, vanish
pass away rapidly
"Time flies like an arrow"
"Time fleeing beneath him"
3. fell
sew a seam by folding the edges
Source: WordNet® (An amazing lexical database of English)
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