noun
- small pins with flat, round heads used to attach papers or other materials to bulletin boards or walls
Examples
- She used thumbtacks to hang her artwork on the bulletin board.
- The teacher asked students to bring thumbtacks for the classroom display.
- He accidentally stepped on a thumbtack that had fallen on the floor.
- The notice was secured to the wall with four thumbtacks.
- She removed the old thumbtacks before putting up the new poster.
- The thumbtacks came in different colors to match the decorations.