"indentations" in the noun sense
1. indentation, indenture
a concave cut into a surface or edge (as in a coastline)
2. pitting, roughness, indentation
the formation of small pits in a surface as a consequence of corrosion
3. indentation, indention, indent, indenture
the space left between the margin and the start of an indented line
4. indentation
the act of cutting into an edge with toothlike notches or angular incisions
Source: WordNet® (An amazing lexical database of English)
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