To provide an absorber which has high cushion performance, is less likely to be twisted, is excellent in liquid-drawing property, causes little discomfort at the inguinal region when applied to an absorbent article, and can improve wear feeling.SOLUTION: An absorber 4 has an excretion part facing area B which is arranged opposite an excretion part of a user when used, and a front area A and a rear area C which are arranged back and forth in the vertical direction of X of the area B, and contains a core formation material that includes a fiber lump 11 including synthetic fiber 11F, water-absorbing fiber 12F and water absorptive polymer 13. The excretion part facing area B has a constriction part 40N shorter in length in a horizontal direction Y than the front area A and the rear area C, and the fiber lump 11 exists at least in the constriction part 40N.SELECTED DRAWING: Figure 2【課題】クッション性が高くてヨレにくく、液引き込み性に優れ、吸収性物品に適用された場合には、鼠蹊部の違和感が少なく、着用感を向上させ得る吸収体を提供すること。【解決手段】本発明の吸収体４は、使用時に使用者の排泄部に対向配置される排泄部対向領域Ｂと、該領域Ｂの縦方向Ｘの前後に配される前方領域Ａ及び後方領域Ｃとを有し、合成繊維１１Ｆを含む繊維塊１１と、吸水性繊維１２Ｆと、吸水性ポリマー１３とを含むコア形成材料を含有する。排泄部対向領域Ｂに、前方領域Ａ及び後方領域Ｃよりも横方向Ｙの長さが短い括れ部４０Ｎを有し、少なくとも括れ部４０Ｎに繊維塊１１が存在する。【選択図】図２
