noun
Archaic term for a military attack carried out at night. Not used in modern Japanese; encountered only in historical or literary contexts.
古文書には「夜込み」という戦法が記されている。
The tactic called 'night attack' is recorded in old documents.
Modern term for a night attack; 夜込み is its archaic predecessor.
Compound of 夜 (yo, 'night') and 込み (komi, from 込む 'to go in, to crowd'), literally 'night entering'. The exact historical derivation is uncertain; the spelling 籠み may reflect an older verb 籠む (komu, 'to confine').