noun which may take the genitive case particle 'no', na-adjective
jam-packed; packed like sardines
Describes a space, container, or vehicle that is extremely crowded or tightly filled with people or things. Often used with に or の.
The commuter train is always jam-packed.
かばんに荷物をぎゅう詰めにした。
I packed my bag tightly with stuff.
jam-packed; packed like sardines
Standard kanji-kana mixed spelling.
From the onomatopoeic adverb ぎゅうぎゅう (squeezing tightly) and 詰め (packing). The exact historical derivation is uncertain, but the word vividly conveys a sense of being tightly squeezed.