The katakana syllable ア (a). Its equivalent in hiragana is あ (a). It is the first syllable in the gojūon order; its position is ア行ア段 (a-gyō a-dan, “row a, section a”).

Alternative spelling of 横筋ジャッカル (“side-striped jackal”)

(psychology, philosophy) apperception

a small stone or pebble, especially one used for throwing / gravel