atgar

Learned borrowing from Old English ætgār (“a short spear, dart, javelin, a kind of dart or other weapon to cast at the enemy”), from Proto-West Germanic *atgaiʀ, from Proto-Germanic *atgaizaz; equivalent to at- + gar (“spear”). Cognate with Old Frisian etgēr, Old High German azgēr, azigēr, Icelandic atgeir (“spear”).

来源：wiktionary