You searched for: “oscule”
oscule (s) (noun), oscules (pl)
The mouthlike opening of a sea sponge which is used to expel water; osculum: Jenny's father showed her a sea sponge with an oscule to ejecte water.
This entry is located in the following units: ora-, or-, orat-; os- + (page 4) oscula- (page 2)