(idiomatic) A problem or difficult issue that is very obvious, but is ignored for the convenience or comfort of those involved.

A room, especially in a gym, sports center, school, swimming pool, etc, designed for people to change their clothes.

(simile, colloquial, chiefly US) Jumpy, nervous.

(phytopathology) Any of several plant fungal diseases caused by having over-wet roots.

A room in a hospital used for performing surgical operations.

(idiomatic) To be explosively angry; to lose one's temper.

Alternative spelling of locker room

(anatomy) The hollow part of the root of a tooth, containing the nerve and blood vessels. / (dentistry) A surgical operation on a root canal, typically filling it with gutta-percha.

The provision of food, drink and other refreshments to a guest room. / The department of a hotel that provides such a service.

(botany) Any adventitious root that grows from a plant stem above ground.