noun, noun which may take the genitive case particle 'no'
one side; single-sided
Refers to one side of a two-sided object, such as paper, a record, or a coin. Often used in compound phrases like 片面印刷 (single-sided printing).
この書類は片面だけ印刷してください。
Please print this document on one side only.
片面が赤く塗られた板を見つけた。
I found a board painted red on one side.