A grub.

(obsolete, transitive, intransitive) To feel or grope in the dark.

plural of grubling

A small, young, or miniature grub.

present participle of grubstake

A separate building or tent in a camp or other complex set aside for preparing and/or eating food. / (slang) A restaurant.

(archaeology) pithouse.

plural of grubhouse

simple past tense and past participle of grubble

present participle of grubble