noun, noun which may take the genitive case particle 'no'
one hand; single-handed
Refers to using only one hand, or something done with one hand. Often used in phrases like 片手で (with one hand) or as a noun modifier (片手の).
彼は片手で重い荷物を持ち上げた。
He lifted the heavy luggage with one hand.
片手にコーヒーカップを
He is reading the newspaper with a coffee cup in one hand.