concave shape

Thesaurus

Noun

1.

concave shape - a shape that curves or bends inwardconcavity, incurvation, incurvaturesolid - a three-dimensional shapedome - a concave shape whose distinguishing characteristic is that the concavity faces downwardfossa, pit - a concavity in a surface (especially an anatomical depression)niche, recess, recession, corner - a small concavitybowl, trough - a concave shape with an open topscoop, pocket - a hollow concave shape made by removing somethingimprint, impression, depression - a concavity in a surface produced by pressing; "he left the impression of his fingers in the soft mud"cup - any cup-shaped concavity; "bees filled the waxen cups with honey"; "he wore a jock strap with a metal cup"; "the cup of her bra"indentation, indenture - a concave cut into a surface or edge (as in a coastline)