tusk

Concise Oxford English Dictionary © 2008 Oxford University Press:
tusk/tʌsk/

▶noun

• 1 a long, pointed tooth, especially one which protrudes from the closed mouth, as in the elephant, walrus, or wild boar.

• 2 a long, tapering object or projection.

– derivatives
tusked adjective,
tusky adjective (literary).

– origin OE tux, var. of tusc (cf. tush2).