1. (n.) A spot; a stain; a mark which discolors or disfigures.

2. (n.) A spot, mark, or small permanent protuberance on the human body; esp., a spot which is dark-colored, from which commonly issue one or more hairs.

3. (n.) A mass of fleshy or other more or less solid matter generated in the uterus.

4. (n.) A mound or massive work formed of masonry or large stones, etc., laid in the sea, often extended either in a right line or an arc of a circle before a port which it serves to defend from the violence of the waves, thus protecting ships in a harbor; also, sometimes, the harbor itself.

5. (n.) Any insectivore of the family Talpidae. They have minute eyes and ears, soft fur, and very large and strong fore feet.

6. (n.) A plow of peculiar construction, for forming underground drains.

7. (v. t.) To form holes in, as a mole; to burrow; to excavate; as, to mole the earth.

8. (v. t.) To clear of molehills.

abutment anchorage anchorage ground arc-boutant arch dam backstop bamboo curtain bank bar barrage barrier basin bat beam bear-trap dam beaver dam benign tumor berth bilge birthmark blackhead blain blaze bleb blemish blind man blister blob blotch boom boss bow brand breakwater breastwork brick wall bubble buffer bulb bulge bulkhead bulla bulwark bump bunch burl button buttress buttress pier buttressing cahot callosity callus cancer carcinoma caste mark check checkmark chine cicatrix clump cofferdam comedo condyle convex corn crack crater craze cut cyst dam dapple defacement defect defense deformation deformity dike discoloration disfiguration disfigurement distortion ditch dock dockage dockyard dot dowel dry dock ear earmark earthwork embankment engraving excrescence fault fence flange flap flaw fleck flick flying buttress freckle fungosity fungus gall gash gate gnarl graving gravity dam groin growth hack handle hanging buttress harbor harborage haven hemangioma hickey hill hump hunch hydraulic-fill dam intumescence iron curtain jam jetty jog joggle jot jutty keloid kink knob knot knur knurl landing landing place landing stage leaping weir lentigo levee lip logjam loop lump macula malignant growth marina mark marking metastatic tumor milium milldam moat moorings morbid growth mottle mound mountain needle scar neoplasm nevus nick nonmalignant tumor notch nub nubbin nubble outgrowth papilloma parapet patch peg pier pier buttress pimple pit pock pockmark point polka dot port port-wine mark port-wine stain portcullis prick protected anchorage proud flesh puncture pustule quay rampart retaining wall rib ridge rift ring road roadblock roads roadstead rock-fill dam sarcoma scab scar scarification score scotch scratch scratching seaport seawall sebaceous cyst shipyard shoulder shutter dam slip speck speckle spine splash split splotch spot stain stigma stone wall strawberry mark stud sty style tab tattoo tattoo mark the blind the sightless the unseeing tick tittle track tubercle tubercule tumor twist verruca vesicle wale wall